Herts Bird Club - WeBS 2017

The Wetland Bird Survey (WeBS) is organised nationally by the British Trust for Ornithology and supported by the WWT, RSPB and JNCC. Its principle aims are to identify population sizes, determine trends in numbers and distribution and to identify important sites for waterbirds across the UK.

In 2017 the Hertfordshire counts were organised by Cath Patrick (Lee Valley from Ware south) and Jim Terry (all other sites) and were undertaken by dedicated observers each month. Some sites are not surveyed during the summer months (April to August) but otherwise coverage is most comprehensive.

In 2017 the core count were the following Sundays: 15 Jan, 12 Feb, 12 Mar, 9 Apr, 14 May, 11 Jun, 23 Jul, 13 Aug, 10 Sep, 8 Oct, 19 Nov, 10 Dec. The scheme organisers have agreed that the Lee Valley counts can be undertaken the previous Saturday, and some counts were carried out on the previous or subsequent weekends.

Sincere thanks are due to everyone who contributes to this important monitoring project and especially to Cath and Jim for their co-ordination.

We are always looking for volunteers to assist with this national monitoring effort both to fill any gaps in the existing coverage but also to take on other sites which could hold significant numbers of waterfowl. The effort involves counting all such species at one wetland site each month on Saturday or Sunday. This should ideally happen every month but most importantly from January to March and September to December inclusive. Please contact Jim Terry (46, Manor Way, Borehamwood, Herts, WD6 1QY) or Cath Patrick (c/o LVRP, Myddleton House, Bull’s Cross, Enfield, EN2, 9HG) if you are able to help. Thank you.

Mute Swan
Canada Goose
Wigeon
Gadwall
Teal
Mallard
Shoveler
Pochard
Tufted Duck
Goldeneye
Ruddy Duck
Little Grebe
Great Crested Grebe
Cormorant
Grey Heron
Moorhen
Coot

Mute SwanTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	101	76	52	52	25	36	27	36	57	63	72	83
Colne Valley:
Hampermill Lake	nc	nc	nc	2	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	2	nc	nc	nc	nc	nc	1	0	0
Stocker's and Bury Lakes	46	42	22	22	16	23	17	23	15	20	19	18
Maple Lodge NR	0	2	2	2	2	2	0	0	0	0	0	0
Lynsters Lake	12	1	2	3	nc	1	2	2	10	nc	9	14
Pynesfield North/South Lakes	2	0	1	3	2	3	2	9	9	6	9	9
Helicon Lake	2	2	1	1	1	1	2	0	1	4	3	2
Troy Mill Lake	39	29	24	17	4	6	4	2	22	32	32	40
Lea Valley:	76	48	86	45	51	26	35	55	109	102	53	48
Lea Valley:
East Hyde	0	2	6	2	4	2	8	10	2	2	2	2
Brocket Park	3	0	2	2	2	2	2	3	2	4	2	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	3	nc	nc	nc	nc	nc	nc	2	2	nc
Amwell NR - others	7	7	1	nc	4	4	4	13	9	4	4	6
Stanstead Abbotts Lakes - N lake	3	4	2	2	2	0	1	9	9	12	8	5
Rye Meads	3	2	2	nc	nc	nc	nc	nc	60	45	5	5
Broxbourne GP	7	8	6	6	6	4	4	4	5	3	4	4
Cheshunt GPs:	53	25	64	33	33	14	16	16	22	30	26	26
Cheshunt GPs:
Herts:	22	10	17	9	7	3	5	7	8	17	15	21
Herts:
Bowyers Water	11	4	4	2	1	2	2	2	nc	2	3	5
Cheshunt Lake	3	0	4	2	1	0	0	1	2	3	3	0
Northmet Lake	0	4	0	0	0	0	0	1	2	6	0	0
Slipe Lane Lake	5	2	4	3	3	0	2	1	4	5	6	13
Turnford Lakes	3	0	5	2	2	1	1	2	0	1	3	3
ex-Herts:	26	11	45	24	26	11	11	9	12	13	11	5
ex-Herts:
Friday Lake	5	0	2	0	0	2	2	2	2	4	2	0
Hooks Marsh GP	2	1	3	0	2	1	2	1	2	2	1	2
Met Police Pit	4	1	2	0	4	2	3	0	0	0	0	0
Seventy Acres Lake	15	9	38	24	20	6	4	6	8	7	8	3
Essex:	5	4	2	0	0	0	0	0	2	0	0	0
Essex:
Hall Marsh Scrape	2	2	0	0	0	0	nc	0	2	0	0	0
Holyfield Marsh Lake	3	2	2	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	11	9	9	nc	11	nc	nc	10	15	16	16
Panshanger Park	1	3	0	nc	nc	nc	nc	nc	nc	5	4	2
Fairlands Valley Park	3	3	4	3	4	8	8	nc	4	3	2	4
Verulamium Park	10	5	2	5	2	2	2	2	4	9	3	3
Tyttenhanger GPs - all	2	0	4	nc	Present	3	6	6	6	5	12	15
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	5	0	0	2	7	13	14	12	8	8	5	3
Tring Reservoirs	25	nc	8	15	16	31	40	40	60	nc	8	nc

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	73	164	74	122	70	67	197	84	207	9	186	142
Colne Valley:
Hampermill Lake	nc	nc	nc	13	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	3	21	20	28	nc	nc	nc	nc	nc	0	1	0
Stocker's and Bury Lakes	24	80	34	70	64	67	120	52	191	9	76	21
Maple Lodge NR	0	0	2	2	0	0	0	2	0	0	0	0
Lynsters Lake	3	62	17	3	nc	0	52	0	2	nc	105	121
Pynesfield North/South Lakes	0	0	0	5	0	0	11	0	0	0	0	0
Helicon Lake	42	0	1	0	0	0	10	30	13	0	2	0
Troy Mill Lake	1	1	0	1	6	0	4	0	1	0	2	0
Lea Valley:	124	354	354	184	222	442	330	509	745	198	288	215
Lea Valley:
East Hyde	3	128	94	59	66	66	48	35	100	143	78	177
Brocket Park	22	0	14	2	1	0	0	1	1	13	9	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	4	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	62	19	39	nc	46	91	33	85	322	6	65	8
Stanstead Abbotts Lakes - N lake	1	65	35	21	23	16	6	55	7	6	13	0
Rye Meads	1	20	29	nc	nc	nc	nc	nc	0	0	1	0
Broxbourne GP	0	1	6	7	2	0	5	0	0	0	0	0
Cheshunt GPs:	35	121	133	95	84	269	238	333	315	30	122	30
Cheshunt GPs:
Herts:	28	22	34	29	32	160	78	43	11	21	117	13
Herts:
Bowyers Water	0	20	22	19	13	95	56	33	nc	8	60	0
Cheshunt Lake	5	2	3	0	2	8	5	0	2	2	3	9
Northmet Lake	23	0	9	1	8	57	17	3	5	8	54	4
Slipe Lane Lake	0	0	0	4	2	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	5	7	0	0	7	4	3	0	0
ex-Herts:	3	25	38	66	47	106	160	290	304	9	5	17
ex-Herts:
Friday Lake	0	0	0	0	0	6	26	3	10	0	0	8
Hooks Marsh GP	0	9	11	16	21	21	15	43	39	0	0	6
Met Police Pit	0	4	2	16	9	14	18	4	10	5	2	0
Seventy Acres Lake	3	12	25	34	17	65	101	240	245	4	3	3
Essex:	4	74	61	0	5	3	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	4	4	5	0	5	3	nc	0	0	0	0	0
Holyfield Marsh Lake	0	70	56	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	2	20	9	nc	13	nc	nc	1	1	1	1
Panshanger Park	2	10	18	nc	nc	nc	nc	nc	nc	0	0	6
Fairlands Valley Park	89	61	91	104	92	292	306	nc	53	9	35	34
Verulamium Park	55	60	76	21	58	27	43	71	149	53	59	50
Tyttenhanger GPs - all	42	111	49	nc	Present	61	75	175	350	12	2	0
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	0	2	2	7	10	117	60	0	3	0	0	0
Tring Reservoirs	17	nc	27	29	13	45	42	16	82	nc	2	nc

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	170	74	2	0	0	0	0	3	2	79	180	95
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	98	54	2	0	0	0	0	0	0	5	0	2
Maple Lodge NR	0	0	0	0	0	0	0	3	0	0	0	0
Lynsters Lake	72	18	0	0	nc	0	0	0	0	nc	0	10
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	2	8	41
Helicon Lake	0	2	0	0	0	0	0	0	0	0	0	2
Troy Mill Lake	0	0	0	0	0	0	0	0	2	72	172	40
Lea Valley:	97	72	68	0	0	0	0	0	11	79	159	152
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	32	52	68	nc	0	0	0	0	0	6	33	99
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	0	4	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	4	5	1	3
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	65	20	0	0	0	0	0	0	3	68	125	50
Cheshunt GPs:
Herts:	2	0	0	0	0	0	0	0	0	0	4	11
Herts:
Bowyers Water	2	0	0	0	0	0	0	0	nc	0	4	11
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	3	68	117	39
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	3	68	117	39
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	63	20	0	0	0	0	0	0	0	0	4	0
Essex:
Hall Marsh Scrape	9	5	0	0	0	0	nc	0	0	0	4	0
Holyfield Marsh Lake	54	15	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	2	1	1	nc	nc	nc	nc	nc	nc	24	44	25
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	0	0	0	0	0	0	0	2
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	3	0	0	0	0	0	0	0	6	3	0	3
Tring Reservoirs	101	nc	27	1	0	0	0	0	8	nc	62	nc

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	185	94	12	13	9	18	39	27	72	72	113	50
Colne Valley:
Hampermill Lake	nc	nc	nc	4	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	86	31	4	3	2	3	12	16	5	31	11	27
Maple Lodge NR	0	4	2	5	7	15	12	5	1	8	0	0
Lynsters Lake	47	18	5	1	nc	0	0	0	6	nc	22	7
Pynesfield North/South Lakes	15	0	0	0	0	0	0	3	11	15	22	2
Helicon Lake	20	38	1	0	0	0	0	0	0	0	0	6
Troy Mill Lake	17	3	0	0	0	0	15	3	49	18	58	8
Lea Valley:	336	277	272	33	24	34	115	146	418	320	260	348
Lea Valley:
East Hyde	43	0	2	2	0	0	0	0	0	12	11	17
Brocket Park	0	0	0	0	0	0	0	0	0	11	36	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	6	nc	nc	nc	nc	nc	nc	6	0	nc
Amwell NR - others	45	8	17	nc	7	15	25	4	33	64	27	99
Stanstead Abbotts Lakes - N lake	36	25	21	8	7	8	59	78	58	37	40	24
Rye Meads	97	109	145	nc	nc	nc	nc	nc	259	145	52	64
Broxbourne GP	58	40	35	9	0	0	0	0	2	10	0	26
Cheshunt GPs:	57	95	46	14	10	11	31	64	66	35	94	118
Cheshunt GPs:
Herts:	39	17	4	0	0	0	2	21	11	4	58	105
Herts:
Bowyers Water	13	2	0	0	0	0	0	0	nc	1	43	69
Cheshunt Lake	7	0	0	0	0	0	0	0	0	0	0	2
Northmet Lake	0	6	2	0	0	0	2	19	11	0	7	2
Slipe Lane Lake	4	2	2	0	0	0	0	0	0	0	2	2
Turnford Lakes	15	7	0	0	0	0	0	2	0	3	6	30
ex-Herts:	15	43	36	13	9	11	29	43	55	31	36	13
ex-Herts:
Friday Lake	4	4	0	0	1	0	0	0	18	31	36	10
Hooks Marsh GP	3	33	7	9	2	0	5	26	21	0	0	3
Met Police Pit	1	0	0	0	0	2	0	0	0	0	0	0
Seventy Acres Lake	7	6	29	4	6	9	24	17	16	0	0	0
Essex:	3	35	6	1	1	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	3	11	0	1	1	0	nc	0	0	0	0	0
Holyfield Marsh Lake	0	24	6	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	3	9	5	nc	0	nc	nc	0	0	8	0
Panshanger Park	171	171	52	nc	nc	nc	nc	nc	nc	128	144	128
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	4	0	4	0	0	0	19	27	18	0	0
Tyttenhanger GPs - all	5	3	20	nc	Present	7	75	50	65	39	60	40
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	16	13	0	8	5	57	86	16	13	20	23	7
Tring Reservoirs	65	nc	41	32	20	18	41	37	32	nc	9	nc

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	18	6	4	2	0	0	8	0	5	8	26	7
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	0	0	1	0	0	0	0	0	0	0	0	0
Maple Lodge NR	18	6	3	2	0	0	8	0	5	8	26	7
Lynsters Lake	0	0	0	0	nc	0	0	0	0	nc	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	63	88	103	14	0	0	0	0	60	61	82	147
Lea Valley:
East Hyde	11	0	1	0	0	0	0	0	0	2	0	1
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	2	nc	nc	nc	nc	nc	nc	0	2	nc
Amwell NR - others	8	11	0	nc	0	0	0	0	0	2	1	12
Stanstead Abbotts Lakes - N lake	2	21	12	0	0	0	0	0	0	1	0	0
Rye Meads	35	33	82	nc	nc	nc	nc	nc	59	53	77	101
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	7	23	6	14	0	0	0	0	1	3	2	33
Cheshunt GPs:
Herts:	5	1	0	0	0	0	0	0	0	1	2	12
Herts:
Bowyers Water	0	1	0	0	0	0	0	0	nc	0	2	12
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	3	0	0	0	0	0	0	0	0	1	0	0
Turnford Lakes	2	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	5	0	0	0	0	0	0	1	2	0	21
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	1
Hooks Marsh GP	0	2	0	0	0	0	0	0	1	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	3	0	0	0	0	0	0	0	2	0	20
Essex:	2	17	6	14	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	2	2	5	14	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	0	15	1	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	14	30	18	nc	nc	nc	nc	nc	nc	26	78	100
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	2	20	39	nc	0	0	0	2	4	17	44	40
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	0	0	2	4	0	0	0	0	1	0	0	2
Tring Reservoirs	247	nc	38	5	0	0	5	23	187	nc	209	nc

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	144	100	141	137	74	104	89	111	144	123	93	60
Colne Valley:
Hampermill Lake	nc	nc	nc	28	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	27	25	17	19	nc	nc	nc	nc	nc	10	13	9
Stocker's and Bury Lakes	45	39	73	49	32	43	31	37	52	61	28	35
Maple Lodge NR	25	16	19	17	17	43	29	58	42	15	8	5
Lynsters Lake	16	4	17	18	nc	2	5	0	28	nc	12	6
Pynesfield North/South Lakes	0	6	5	4	5	3	5	2	2	5	4	0
Helicon Lake	28	6	5	2	9	0	3	7	17	27	22	0
Troy Mill Lake	3	4	5	0	11	13	16	7	3	5	6	5
Lea Valley:	407	319	353	174	142	121	388	190	336	345	265	442
Lea Valley:
East Hyde	52	22	22	15	14	16	12	17	21	21	11	17
Brocket Park	9	10	8	9	6	9	20	15	19	14	7	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	8	nc	nc	nc	nc	nc	nc	43	12	nc
Amwell NR - others	42	26	24	nc	25	13	77	25	29	12	23	90
Stanstead Abbotts Lakes - N lake	26	16	23	6	14	24	57	30	14	16	10	14
Rye Meads	92	80	85	nc	nc	nc	nc	nc	110	69	41	124
Broxbourne GP	28	12	12	16	6	5	36	4	20	14	23	13
Cheshunt GPs:	158	153	171	128	77	54	186	99	123	156	138	184
Cheshunt GPs:
Herts:	84	68	80	72	33	32	116	32	50	59	88	70
Herts:
Bowyers Water	16	13	12	9	10	5	32	4	nc	26	13	13
Cheshunt Lake	4	6	6	7	3	0	15	1	18	5	6	4
Northmet Lake	44	38	48	31	7	20	57	24	29	25	49	51
Slipe Lane Lake	6	9	8	16	6	2	0	0	0	2	2	2
Turnford Lakes	14	2	6	9	7	5	12	3	3	1	18	0
ex-Herts:	57	62	61	51	44	22	70	64	73	97	48	114
ex-Herts:
Friday Lake	0	2	11	3	3	0	0	1	0	1	0	0
Hooks Marsh GP	0	5	14	15	11	2	10	23	9	9	5	12
Met Police Pit	4	4	2	1	0	0	0	1	2	4	3	4
Seventy Acres Lake	53	51	34	32	30	20	60	39	62	83	40	98
Essex:	17	23	30	5	0	0	0	3	0	0	2	0
Essex:
Hall Marsh Scrape	4	3	14	5	0	0	nc	3	0	0	2	0
Holyfield Marsh Lake	13	20	16	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	71	12	32	nc	32	nc	nc	23	73	74	90
Panshanger Park	113	120	72	nc	nc	nc	nc	nc	nc	22	97	84
Fairlands Valley Park	217	193	175	74	90	131	202	nc	192	201	142	154
Verulamium Park	28	12	13	14	0	13	19	32	29	7	17	34
Tyttenhanger GPs - all	145	70	45	nc	Present	48	105	30	52	56	35	25
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	4	7	1	14	7	18	8	4	9	5	17	10
Tring Reservoirs	93	nc	76	91	87	76	397	301	283	nc	148	nc

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	223	105	25	8	2	2	7	17	34	62	86	67
Colne Valley:
Hampermill Lake	nc	nc	nc	2	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	2
Stocker's and Bury Lakes	221	105	22	3	0	0	1	14	22	53	68	54
Maple Lodge NR	0	0	3	3	2	2	6	3	12	9	12	11
Lynsters Lake	0	0	0	0	nc	0	0	0	0	nc	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	2	0	0	0	0	0	0	0	0	0	6	0
Lea Valley:	166	201	223	0	2	1	2	9	232	94	123	161
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	12	17	nc
Amwell NR - others	14	26	24	nc	1	1	1	0	16	7	5	10
Stanstead Abbotts Lakes - N lake	37	53	6	0	0	0	0	0	1	7	3	10
Rye Meads	22	26	143	nc	nc	nc	nc	nc	110	41	57	31
Broxbourne GP	6	0	0	0	0	0	0	6	0	7	0	2
Cheshunt GPs:	87	96	50	0	1	0	1	3	105	20	41	108
Cheshunt GPs:
Herts:	22	47	7	0	0	0	0	0	1	0	17	9
Herts:
Bowyers Water	2	0	0	0	0	0	0	0	nc	0	1	2
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	7	7	7	0	0	0	0	0	1	0	11	2
Slipe Lane Lake	9	40	0	0	0	0	0	0	0	0	4	3
Turnford Lakes	4	0	0	0	0	0	0	0	0	0	1	2
ex-Herts:	27	25	23	0	1	0	1	3	104	20	24	99
ex-Herts:
Friday Lake	13	0	0	0	0	0	0	0	35	13	19	9
Hooks Marsh GP	9	6	2	0	0	0	0	3	26	1	3	0
Met Police Pit	0	0	0	0	0	0	0	0	2	1	0	9
Seventy Acres Lake	5	19	21	0	1	0	1	0	41	5	2	81
Essex:	38	24	20	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	6	14	18	0	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	32	10	2	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	4	2
Panshanger Park	6	8	2	nc	nc	nc	nc	nc	nc	0	12	18
Fairlands Valley Park	0	0	0	0	0	0	1	nc	0	1	0	0
Verulamium Park	0	6	0	0	0	0	0	0	0	4	5	5
Tyttenhanger GPs - all	38	10	43	nc	0	0	0	0	2	6	16	32
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	8	76	20	12	0	0	0	0	25	29	24	48
Tring Reservoirs	65	nc	58	6	0	0	5	16	141	nc	53	nc

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	68	119	41	39	41	37	23	16	41	45	26	15
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	8	16	0	0	nc	nc	nc	nc	nc	0	4	1
Stocker's and Bury Lakes	40	64	26	22	23	33	14	12	26	40	16	8
Maple Lodge NR	0	10	13	13	7	1	5	4	2	1	0	0
Lynsters Lake	10	2	1	1	nc	0	0	0	13	nc	1	0
Pynesfield North/South Lakes	5	17	0	1	0	0	0	0	0	4	5	0
Helicon Lake	1	1	1	0	0	0	0	0	0	0	0	3
Troy Mill Lake	4	9	0	2	11	3	4	0	0	0	0	3
Lea Valley:	97	91	77	13	20	10	9	23	51	39	57	49
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	7	nc	nc	nc	nc	nc	nc	3	9	nc
Amwell NR - others	25	9	4	nc	8	5	6	11	42	23	18	20
Stanstead Abbotts Lakes - N lake	16	17	10	5	5	1	1	7	9	13	6	8
Rye Meads	0	8	26	nc	nc	nc	nc	nc	0	0	0	3
Broxbourne GP	0	0	1	0	0	0	0	0	0	0	4	12
Cheshunt GPs:	56	57	29	8	7	4	2	5	0	0	20	6
Cheshunt GPs:
Herts:	32	28	0	2	2	0	0	1	0	0	17	2
Herts:
Bowyers Water	30	22	0	0	0	0	0	0	nc	0	14	0
Cheshunt Lake	2	6	0	0	0	0	0	0	0	0	2	2
Northmet Lake	0	0	0	2	2	0	0	1	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	1	0
ex-Herts:	14	17	3	6	5	4	2	4	0	0	3	4
ex-Herts:
Friday Lake	8	2	1	0	0	0	0	0	0	0	1	1
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	1	0
Met Police Pit	1	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	5	15	2	6	5	4	2	4	0	0	1	3
Essex:	10	12	26	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	10	12	26	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	13	12	4	nc	nc	nc	nc	nc	nc	3	6	13
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	4	0	5	1	0	0	0	0	1	2	0
Tyttenhanger GPs - all	4	3	8	nc	0	0	2	0	2	2	2	6
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	23	6	0	5	0	67	166	43	4	4	5	28
Tring Reservoirs	83	nc	16	1	3	6	21	48	105	nc	99	nc

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	393	307	402	153	54	75	85	97	41	282	183	166
Colne Valley:
Hampermill Lake	nc	nc	nc	8	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	10	23	14	9	nc	nc	nc	nc	nc	9	7	5
Stocker's and Bury Lakes	95	85	192	59	23	54	52	85	21	77	55	110
Maple Lodge NR	5	6	25	25	9	4	8	5	3	4	3	0
Lynsters Lake	30	45	25	27	nc	0	2	5	15	nc	30	7
Pynesfield North/South Lakes	23	36	20	11	0	0	0	1	0	10	27	1
Helicon Lake	30	25	16	14	8	3	5	0	2	8	21	40
Troy Mill Lake	200	87	110	0	14	14	18	1	0	174	40	3
Lea Valley:	613	586	703	196	145	139	214	289	409	444	506	384
Lea Valley:
East Hyde	0	0	0	0	4	0	0	0	0	2	0	4
Brocket Park	9	0	0	6	2	18	2	4	5	1	6	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	71	nc	nc	nc	nc	nc	nc	72	21	nc
Amwell NR - others	76	34	86	nc	35	43	14	16	74	38	59	0
Stanstead Abbotts Lakes - N lake	52	74	68	21	51	23	48	77	141	146	151	114
Rye Meads	55	50	81	nc	nc	nc	nc	nc	50	23	22	21
Broxbourne GP	143	158	56	50	1	6	117	112	32	81	27	102
Cheshunt GPs:	278	270	341	119	52	49	33	80	107	81	220	143
Cheshunt GPs:
Herts:	122	114	147	72	10	2	4	20	58	64	134	97
Herts:
Bowyers Water	30	39	47	27	5	0	2	5	nc	30	24	41
Cheshunt Lake	21	19	9	0	0	0	0	0	0	0	20	3
Northmet Lake	30	13	35	28	4	0	2	15	57	26	32	8
Slipe Lane Lake	25	30	31	11	1	0	0	0	0	5	33	17
Turnford Lakes	16	13	25	6	0	2	0	0	1	3	25	28
ex-Herts:	104	90	115	40	42	47	29	60	49	17	76	46
ex-Herts:
Friday Lake	46	7	41	21	0	0	1	6	5	13	41	3
Hooks Marsh GP	5	14	19	9	16	1	2	7	25	0	5	10
Met Police Pit	18	24	9	0	0	3	3	0	0	3	14	10
Seventy Acres Lake	35	45	46	10	26	43	23	47	19	1	16	23
Essex:	52	66	79	7	0	0	0	0	0	0	10	0
Essex:
Hall Marsh Scrape	10	10	3	7	0	0	nc	0	0	0	10	0
Holyfield Marsh Lake	42	56	76	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	1	nc	nc	0	0	0	0
Panshanger Park	41	32	51	nc	nc	nc	nc	nc	nc	24	35	34
Fairlands Valley Park	3	0	0	2	0	0	0	nc	0	1	0	0
Verulamium Park	2	6	10	18	9	12	3	0	0	1	2	0
Tyttenhanger GPs - all	15	13	30	nc	Present	6	21	12	3	8	12	20
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	72	83	20	105	14	21	124	176	71	76	80	83
Tring Reservoirs	272	nc	281	234	47	63	160	262	316	nc	211	nc

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	11	15	5	0	0	0	1	0	0	0	3	6
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	11	15	4	0	0	0	0	0	0	0	2	6
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	0	0	nc	0	0	0	0	nc	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	1	0
Troy Mill Lake	0	0	1	0	0	0	1	0	0	0	0	0
Lea Valley:	6	9	11	0	0	0	0	0	0	0	2	8
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	5	6	11	nc	0	0	0	0	0	0	1	5
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	0	0	0	1	1
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	1	3	0	0	0	0	0	0	0	0	0	2
Cheshunt GPs:
Herts:	1	1	0	0	0	0	0	0	0	0	0	2
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	1	1	0	0	0	0	0	0	0	0	0	2
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	1	0	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	0	1	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	0	1	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	0	1	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	0	0	0	0	0	0	0	0
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	0	1	0	2	0	0	0	0	1	0	0	0
Tring Reservoirs	4	nc	2	0	0	0	0	0	0	nc	3	nc

Ruddy DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	0	0	0	0	0	0	0	0	0	0	0	0
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	0	0	nc	0	0	0	0	nc	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	0	0	0	nc	0	0	0	0	0	0	0	0
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	0	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	0	0	0	0	0	0	0	0
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	0	0	0	0	0	0	0	0	0	0	0	0
Tring Reservoirs	0	nc	0	0	0	0	0	0	0	nc	0	nc

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	7	5	9	7	4	2	0	8	7	5	5	1
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	0	0
Stocker's and Bury Lakes	0	1	1	0	0	0	0	0	0	0	0	0
Maple Lodge NR	7	4	8	7	4	2	0	8	7	5	3	0
Lynsters Lake	0	0	0	0	nc	0	0	0	0	nc	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	2	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	1
Lea Valley:	19	22	22	6	10	8	11	13	48	39	18	18
Lea Valley:
East Hyde	2	2	4	2	2	2	1	2	2	1	0	1
Brocket Park	2	3	2	1	4	6	9	8	6	7	5	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	1	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	2	3	0	nc	0	0	0	0	0	1	0	0
Stanstead Abbotts Lakes - N lake	4	2	1	1	2	0	1	0	4	4	2	3
Rye Meads	0	7	12	nc	nc	nc	nc	nc	35	24	7	6
Broxbourne GP	4	3	0	0	0	0	0	0	1	1	2	3
Cheshunt GPs:	5	2	2	2	2	0	0	3	0	1	2	5
Cheshunt GPs:
Herts:	1	1	1	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	1	0	0	0	0	0	0	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	1	0	0	0	0	0	0	0	0	0
Slipe Lane Lake	1	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	4	0	0	2	0	0	0	3	0	1	2	5
ex-Herts:
Friday Lake	0	0	0	2	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	0	0	1	1
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	1
Seventy Acres Lake	4	0	0	0	0	0	0	3	0	1	1	3
Essex:	0	1	1	0	2	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	1	0	2	0	nc	0	0	0	0	0
Holyfield Marsh Lake	0	1	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	4	0	0	nc	0	nc	nc	0	0	4	0
Panshanger Park	26	26	18	nc	nc	nc	nc	nc	nc	25	26	24
Fairlands Valley Park	0	0	1	0	0	0	0	nc	0	0	0	0
Verulamium Park	0	0	2	2	1	1	2	2	3	1	0	0
Tyttenhanger GPs - all	0	0	0	nc	0	0	0	0	2	0	0	4
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	1	2	0	2	2	2	3	7	4	7	6	4
Tring Reservoirs	8	nc	3	2	0	0	2	9	8	nc	11	nc

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	34	29	50	69	35	42	46	38	48	50	48	34
Colne Valley:
Hampermill Lake	nc	nc	nc	24	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	5	6	8	nc	nc	nc	nc	nc	5	4	6
Stocker's and Bury Lakes	13	4	18	14	9	16	18	21	26	29	27	4
Maple Lodge NR	0	0	3	3	3	2	6	0	0	0	0	0
Lynsters Lake	4	6	11	5	nc	8	6	3	2	nc	6	7
Pynesfield North/South Lakes	1	4	6	5	6	8	8	6	6	6	4	1
Helicon Lake	0	3	0	3	4	2	1	4	5	2	2	5
Troy Mill Lake	16	7	6	7	13	6	7	4	9	8	5	11
Lea Valley:	60	62	77	44	62	59	67	58	76	82	50	37
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	1	2	2	2	2	0	4	3	2	3	1	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	2	nc	nc	nc	nc	nc	nc	6	1	nc
Amwell NR - others	1	1	12	nc	12	4	2	4	3	1	3	3
Stanstead Abbotts Lakes - N lake	6	3	5	3	6	13	6	9	9	11	8	2
Rye Meads	5	0	3	nc	nc	nc	nc	nc	9	7	0	0
Broxbourne GP	8	8	14	15	14	17	20	9	22	15	6	3
Cheshunt GPs:	39	48	39	24	28	25	35	33	31	39	31	29
Cheshunt GPs:
Herts:	13	13	13	16	13	13	19	15	10	16	11	6
Herts:
Bowyers Water	9	7	7	9	7	6	7	7	nc	7	3	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	3	4	5	5	5	5	9	7	8	5	4	2
Slipe Lane Lake	1	2	0	1	1	2	2	0	0	2	3	1
Turnford Lakes	0	0	1	1	0	0	1	1	2	2	1	3
ex-Herts:	14	14	14	8	15	12	16	18	21	23	20	23
ex-Herts:
Friday Lake	1	1	0	1	0	1	1	2	3	2	1	0
Hooks Marsh GP	2	5	7	6	9	5	6	5	6	7	6	8
Met Police Pit	0	2	0	0	0	0	1	1	1	1	2	2
Seventy Acres Lake	11	6	7	1	6	6	8	10	11	13	11	13
Essex:	12	21	12	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	nc	0	0	0	0	0
Holyfield Marsh Lake	12	21	12	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	0	0
Panshanger Park	1	1	2	nc	nc	nc	nc	nc	nc	1	0	0
Fairlands Valley Park	1	1	5	3	3	2	0	nc	0	0	1	5
Verulamium Park	0	0	0	0	0	0	2	2	4	4	0	0
Tyttenhanger GPs - all	16	7	10	nc	Present	6	5	2	5	15	19	15
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	20	12	3	27	23	41	57	92	18	7	4	19
Tring Reservoirs	10	nc	30	23	15	20	23	29	25	nc	32	nc

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	45	33	21	9	8	4	8	7	19	20	50	26
Colne Valley:
Hampermill Lake	nc	nc	nc	0	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	nc	nc	nc	nc	nc	0	3	0
Stocker's and Bury Lakes	24	20	17	6	2	3	5	5	15	8	35	20
Maple Lodge NR	0	0	0	1	3	1	1	2	2	0	0	0
Lynsters Lake	8	2	1	1	nc	0	1	0	0	nc	1	0
Pynesfield North/South Lakes	4	3	1	0	0	0	0	0	1	0	0	0
Helicon Lake	7	5	0	1	2	0	0	0	0	1	4	4
Troy Mill Lake	2	3	2	0	1	0	1	0	1	11	7	2
Lea Valley:	123	144	164	24	49	50	42	63	102	134	133	135
Lea Valley:
East Hyde	0	1	2	1	1	0	2	2	3	3	2	3
Brocket Park	1	0	1	4	4	2	3	6	5	9	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	33	44	55	nc	33	33	26	24	16	22	30	12
Stanstead Abbotts Lakes - N lake	11	5	8	5	1	4	4	1	5	7	11	7
Rye Meads	0	2	0	nc	nc	nc	nc	nc	28	6	4	4
Broxbourne GP	7	5	5	4	1	4	1	5	5	5	3	5
Cheshunt GPs:	71	87	93	10	9	7	6	25	40	82	83	104
Cheshunt GPs:
Herts:	26	16	10	1	2	2	3	16	2	9	31	46
Herts:
Bowyers Water	5	3	2	0	0	0	0	2	nc	3	5	1
Cheshunt Lake	4	1	2	0	0	0	0	0	0	1	2	3
Northmet Lake	6	7	6	1	0	2	3	12	0	4	14	26
Slipe Lane Lake	1	4	0	0	2	0	0	0	1	1	1	3
Turnford Lakes	10	1	0	0	0	0	0	2	1	0	9	13
ex-Herts:	29	36	14	9	6	5	3	9	38	73	52	58
ex-Herts:
Friday Lake	0	1	1	0	1	0	1	2	0	0	4	1
Hooks Marsh GP	16	17	9	5	2	2	2	1	8	28	19	20
Met Police Pit	4	3	1	1	0	0	0	0	3	1	4	21
Seventy Acres Lake	9	15	3	3	3	3	0	6	27	44	25	16
Essex:	16	35	69	0	1	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	1	0	1	0	nc	0	0	0	0	0
Holyfield Marsh Lake	16	35	68	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	0	0	nc	0	nc	nc	0	0	1	0
Panshanger Park	3	6	0	nc	nc	nc	nc	nc	nc	1	2	10
Fairlands Valley Park	9	9	3	3	0	2	3	nc	5	5	6	4
Verulamium Park	0	2	1	2	0	0	0	3	12	12	0	0
Tyttenhanger GPs - all	75	21	6	nc	Present	0	0	2	2	10	62	20
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	2	3	0	2	2	1	18	16	27	35	1	15
Tring Reservoirs	43	nc	24	18	29	30	11	33	23	nc	51	nc

Grey HeronTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	21	16	25	10	23	20	7	6	8	13	16	10
Colne Valley:
Hampermill Lake	nc	nc	nc	4	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	1	nc	nc	nc	nc	nc	1	2	2
Stocker's and Bury Lakes	12	15	22	2	19	12	3	3	3	7	5	3
Maple Lodge NR	1	0	1	1	3	1	1	0	2	2	3	4
Lynsters Lake	3	0	0	0	nc	1	0	0	0	nc	1	0
Pynesfield North/South Lakes	1	1	0	1	0	1	1	2	0	0	1	0
Helicon Lake	0	0	0	0	0	1	0	1	0	0	0	0
Troy Mill Lake	4	0	2	1	1	4	2	0	3	3	4	1
Lea Valley:	29	31	37	8	21	17	14	13	23	30	29	25
Lea Valley:
East Hyde	4	2	3	1	2	1	2	2	3	4	2	4
Brocket Park	1	1	0	0	0	0	0	1	0	1	0	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	0	nc	nc	nc	nc	nc	nc	0	0	nc
Amwell NR - others	2	10	20	nc	11	4	4	3	3	5	5	0
Stanstead Abbotts Lakes - N lake	3	0	0	0	0	1	2	2	0	2	2	2
Rye Meads	5	5	0	nc	nc	nc	nc	nc	8	8	5	7
Broxbourne GP	0	0	1	3	0	3	1	0	1	3	1	1
Cheshunt GPs:	14	13	13	4	8	8	5	5	8	7	14	11
Cheshunt GPs:
Herts:	2	2	0	0	0	0	2	0	0	2	3	1
Herts:
Bowyers Water	1	1	0	0	0	0	0	0	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	1	0	0
Northmet Lake	1	0	0	0	0	0	1	0	0	1	1	1
Slipe Lane Lake	0	1	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	1	0	0	0	2	0
ex-Herts:	10	6	3	4	7	5	3	5	8	5	9	10
ex-Herts:
Friday Lake	2	1	1	0	0	0	1	0	1	0	0	1
Hooks Marsh GP	4	2	2	2	3	4	1	1	4	1	3	5
Met Police Pit	1	3	0	0	0	0	1	1	0	1	1	1
Seventy Acres Lake	3	0	0	2	4	1	0	3	3	3	5	3
Essex:	2	5	10	0	1	3	0	0	0	0	2	0
Essex:
Hall Marsh Scrape	0	0	2	0	1	3	nc	0	0	0	2	0
Holyfield Marsh Lake	2	5	8	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	1	1	0	nc	0	nc	nc	0	1	1	2
Panshanger Park	4	4	0	nc	nc	nc	nc	nc	nc	1	3	0
Fairlands Valley Park	0	0	0	0	0	2	1	nc	0	0	0	0
Verulamium Park	0	4	5	1	6	3	3	1	2	1	1	2
Tyttenhanger GPs - all	8	8	20	nc	Present	14	3	4	5	4	4	4
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	1	1	0	0	1	2	1	4	0	2	1	1
Tring Reservoirs	4	nc	12	12	7	7	9	10	4	nc	17	nc

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	48	32	40	38	10	11	36	19	21	47	36	37
Colne Valley:
Hampermill Lake	nc	nc	nc	11	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	5	9	5	3	nc	nc	nc	nc	nc	5	4	6
Stocker's and Bury Lakes	30	0	12	12	2	4	6	6	4	21	15	18
Maple Lodge NR	4	6	7	6	4	4	12	6	8	5	4	2
Lynsters Lake	0	1	1	1	nc	0	0	1	1	nc	0	0
Pynesfield North/South Lakes	0	2	2	1	1	1	2	2	1	7	8	1
Helicon Lake	4	6	3	1	2	2	3	1	2	0	3	2
Troy Mill Lake	5	8	10	3	1	0	13	3	5	9	2	8
Lea Valley:	160	182	163	52	46	37	41	44	178	152	135	98
Lea Valley:
East Hyde	21	18	19	15	12	10	12	15	19	13	12	17
Brocket Park	13	17	17	7	16	6	7	10	18	26	32	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	7	nc	nc	nc	nc	nc	nc	2	5	nc
Amwell NR - others	13	17	15	nc	5	7	11	2	10	12	8	9
Stanstead Abbotts Lakes - N lake	4	5	9	4	3	9	3	7	6	6	4	2
Rye Meads	81	88	74	nc	nc	nc	nc	nc	97	78	41	45
Broxbourne GP	4	10	6	5	1	1	2	5	12	4	7	5
Cheshunt GPs:	24	27	16	21	9	4	6	5	16	11	26	20
Cheshunt GPs:
Herts:	7	16	6	11	2	0	0	2	1	2	15	7
Herts:
Bowyers Water	2	8	5	2	2	0	0	2	nc	2	4	2
Cheshunt Lake	1	0	0	1	0	0	0	0	0	0	0	3
Northmet Lake	4	6	1	5	0	0	0	0	1	0	5	2
Slipe Lane Lake	0	0	0	1	0	0	0	0	0	0	2	0
Turnford Lakes	0	2	0	2	0	0	0	0	0	0	4	0
ex-Herts:	12	9	7	9	3	2	6	3	15	9	11	13
ex-Herts:
Friday Lake	0	0	3	1	0	0	0	0	1	3	0	0
Hooks Marsh GP	3	2	2	2	2	0	2	0	5	1	7	5
Met Police Pit	0	2	0	1	0	0	0	0	3	0	0	2
Seventy Acres Lake	9	5	2	5	1	2	4	3	6	5	4	6
Essex:	5	2	3	1	4	2	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	5	2	3	1	4	2	nc	0	0	0	0	0
Holyfield Marsh Lake	Present	Present	Present	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	1	5	1	nc	2	nc	nc	0	1	2	5
Panshanger Park	18	34	10	nc	nc	nc	nc	nc	nc	5	6	8
Fairlands Valley Park	47	42	35	31	20	23	25	nc	34	46	36	26
Verulamium Park	11	18	8	6	5	14	14	19	13	10	27	10
Tyttenhanger GPs - all	26	23	30	nc	Present	9	32	Present	14	23	31	20
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	3	2	0	3	0	5	4	4	8	3	3	2
Tring Reservoirs	43	nc	20	12	7	4	22	49	58	nc	74	nc

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	1381	629	545	390	207	269	309	572	832	723	1014	1134
Colne Valley:
Hampermill Lake	nc	nc	nc	30	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	21	28	36	35	nc	nc	nc	nc	nc	19	12	19
Stocker's and Bury Lakes	562	0	192	118	91	81	90	212	235	254	241	337
Maple Lodge NR	6	20	16	15	22	22	11	5	6	8	5	1
Lynsters Lake	317	157	72	37	nc	56	85	85	165	nc	100	230
Pynesfield North/South Lakes	91	54	72	49	44	56	62	58	131	108	136	198
Helicon Lake	84	78	40	21	17	17	32	39	58	42	68	72
Troy Mill Lake	300	292	117	85	33	37	29	173	237	292	452	277
Lea Valley:	2182	1563	1144	424	396	414	809	907	1382	1747	1987	1645
Lea Valley:
East Hyde	10	21	18	26	16	14	10	11	12	22	11	32
Brocket Park	84	84	70	27	33	37	68	77	68	101	89	nc
Stanborough Lakes North	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Stanborough Lakes South	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
King's Meads	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Amwell GP - Ware / Thrift GP	nc	nc	20	nc	nc	nc	nc	nc	nc	11	7	nc
Amwell NR - others	370	152	117	nc	57	65	196	256	314	263	255	213
Stanstead Abbotts Lakes - N lake	139	102	91	30	42	45	43	71	113	177	168	103
Rye Meads	128	157	162	nc	nc	nc	nc	nc	464	348	144	112
Broxbourne GP	404	308	183	105	63	59	140	102	204	277	405	443
Cheshunt GPs:	1047	739	483	236	185	194	352	390	207	548	908	742
Cheshunt GPs:
Herts:	781	509	303	118	109	135	205	227	56	417	611	543
Herts:
Bowyers Water	474	238	90	36	54	74	135	151	nc	261	296	260
Cheshunt Lake	20	8	25	7	1	1	0	1	5	1	3	10
Northmet Lake	103	147	111	35	16	29	55	29	19	82	122	90
Slipe Lane Lake	100	65	43	19	20	19	12	23	18	45	122	88
Turnford Lakes	84	51	34	21	18	12	3	23	14	28	68	95
ex-Herts:	250	204	147	112	70	58	147	162	151	129	293	199
ex-Herts:
Friday Lake	41	6	7	16	9	0	24	24	27	59	165	43
Hooks Marsh GP	5	29	23	28	20	17	21	16	12	10	27	39
Met Police Pit	106	35	48	24	10	11	24	18	8	3	5	4
Seventy Acres Lake	98	134	69	44	31	30	78	104	104	57	96	113
Essex:	16	26	33	6	6	1	0	1	0	2	4	0
Essex:
Hall Marsh Scrape	6	6	9	6	6	1	nc	1	0	2	4	0
Holyfield Marsh Lake	10	20	24	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	5	2	0	nc	3	nc	nc	1	2	1	2
Panshanger Park	188	206	127	nc	nc	nc	nc	nc	nc	162	183	174
Fairlands Valley Park	45	36	36	33	31	38	38	nc	47	44	36	41
Verulamium Park	74	58	59	47	37	31	63	66	61	66	60	80
Tyttenhanger GPs - all	90	84	120	nc	Present	40	70	Present	62	36	52	40
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	139	55	Present	74	74	138	217	180	91	65	53	37
Tring Reservoirs	478	nc	155	143	147	215	570	695	651	nc	170	nc