Herts Bird Club - WeBS 2016

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 2016 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 2016 the counts were undertaken on the following Sundays; 17 Jan, 21 Feb, 13 Mar, 10 Apr, 8 May, 5 Jun, 24 Jul, 21 Aug, 18 Sep, 16 Oct, 13 Nov and 18 Dec. The scheme organisers have agreed that the Lee Valley counts can be undertaken the previous Saturday.

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:	49	42	7	44	27	24	29	30	44	51	26	77
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	2	2	2	2	2	2	0	5	0	0	0
Stocker's and Bury Lakes	27	20	0	30	18	15	15	19	10	15	17	35
Maple Lodge NR	0	2	2	2	2	2	2	2	2	0	0	0
Lynsters Lake	14	9	nc	5	3	0	4	4	13	21	nc	24
Pynesfield North/South Lakes	2	2	2	2	2	2	2	2	4	4	3	3
Helicon Lake	2	0	1	1	0	1	2	0	3	0	2	2
Troy Mill Lake	4	7	0	2	0	2	2	3	7	11	4	13
Lea Valley:	82	53	74	52	51	46	64	53	75	86	64	99
Lea Valley:
East Hyde	2	2	3	2	2	2	2	2	2	12	2	nc
Brocket Park	7	2	1	1	1	3	2	2	3	0	3	6
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	7	0	0	nc	nc	nc	nc	nc	nc	0	0	5
Amwell NR - others	8	8	4	7	2	5	4	nc	nc	8	5	9
Stanstead Abbotts Lakes - N lake	4	4	0	5	3	2	6	11	19	2	4	5
Rye Meads	6	2	5	nc	nc	nc	nc	nc	24	36	19	7
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	3	4
Cheshunt GPs:	48	35	61	37	43	34	50	38	27	28	28	63
Cheshunt GPs:
Herts:	8	12	12	11	7	6	3	10	9	12	22	57
Herts:
Bowyers Water	3	3	3	2	1	4	nc	4	nc	7	13	44
Cheshunt Lake	1	1	1	2	0	0	1	3	3	0	2	0
Northmet Lake	0	2	2	4	3	1	0	1	2	0	0	7
Slipe Lane Lake	2	4	3	3	2	1	1	0	2	3	3	4
Turnford Lakes	2	2	3	0	1	0	1	2	2	2	4	2
ex-Herts:	40	22	46	26	35	28	47	28	18	16	4	6
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	2	0	2
Hooks Marsh GP	5	3	9	3	3	4	4	3	5	6	1	0
Met Police Pit	2	2	0	0	2	0	2	1	0	0	0	2
Seventy Acres Lake	33	17	37	23	30	24	41	24	13	8	3	2
Essex:	0	1	3	0	1	0	0	0	0	0	2	0
Essex:
Hall Marsh Scrape	0	1	3	0	1	0	0	0	0	0	2	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	4	7	5	9	7	7	2	9	7	11	11	11
Panshanger Park	13	2	2	1	2	nc	nc	nc	4	nc	6	10
Fairlands Valley Park	nc	nc	2	2	nc	2	4	4	4	2	2	2
Verulamium Park	13	11	9	nc	1	5	2	4	2	3	3	4
Tyttenhanger GPs - all	3	3	5	nc	nc	6	2	3	4	6	2	4
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	2	0	0	3	1	4	2	5	5	5	7	11
Tring Reservoirs	8	2	6	8	19	15	47	52	nc	45	51	37

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	227	161	119	67	66	98	237	66	26	48	18	73
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	1
Batchworth Lake	13	27	23	27	22	4	9	17	0	15	0	5
Stocker's and Bury Lakes	207	61	91	33	35	93	109	28	8	2	11	13
Maple Lodge NR	0	0	2	2	2	0	0	0	0	0	0	0
Lynsters Lake	7	73	nc	3	7	0	30	9	15	21	nc	42
Pynesfield North/South Lakes	0	0	0	0	0	0	7	1	2	0	0	0
Helicon Lake	0	0	3	2	0	0	7	11	1	9	6	11
Troy Mill Lake	0	0	0	0	0	1	75	0	0	1	1	1
Lea Valley:	244	322	338	328	266	348	360	345	234	384	361	62
Lea Valley:
East Hyde	56	112	99	48	52	22	33	33	155	199	164	nc
Brocket Park	106	41	18	8	5	11	63	24	26	88	108	0
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	4	16	8	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	4	29	48	135	70	46	44	nc	nc	2	0	32
Stanstead Abbotts Lakes - N lake	31	32	28	26	22	20	16	52	2	13	2	0
Rye Meads	0	2	6	nc	nc	nc	nc	nc	0	7	18	6
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	16	0	0
Cheshunt GPs:	43	90	131	111	117	249	204	236	51	59	69	24
Cheshunt GPs:
Herts:	16	22	48	35	49	100	89	16	5	41	23	3
Herts:
Bowyers Water	9	7	15	13	19	68	nc	12	nc	37	23	2
Cheshunt Lake	7	2	0	2	7	7	1	2	2	0	0	1
Northmet Lake	0	8	7	10	12	25	88	2	0	4	0	0
Slipe Lane Lake	0	1	6	2	0	0	0	0	0	0	0	0
Turnford Lakes	0	4	20	8	11	0	0	0	3	0	0	0
ex-Herts:	27	60	76	72	62	145	114	218	46	14	3	5
ex-Herts:
Friday Lake	0	2	2	0	2	2	8	0	0	0	0	0
Hooks Marsh GP	11	12	20	18	23	108	49	58	17	7	0	0
Met Police Pit	1	16	20	17	6	0	6	3	0	0	0	0
Seventy Acres Lake	15	30	34	37	31	35	51	157	29	7	3	5
Essex:	0	8	7	4	6	4	1	2	0	4	43	16
Essex:
Hall Marsh Scrape	0	8	7	4	6	4	1	2	0	4	43	16
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	14	18	13	9	14	3	25	51	13	0	1
Panshanger Park	17	47	51	47	50	nc	nc	nc	0	nc	6	2
Fairlands Valley Park	nc	nc	90	74	nc	208	181	35	142	82	9	11
Verulamium Park	48	55	23	nc	49	60	105	84	144	81	68	68
Tyttenhanger GPs - all	42	36	29	nc	nc	11	26	187	137	32	66	102
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	0	0	11	7	0	59	99	169	3	0	0	0
Tring Reservoirs	20	25	18	34	36	65	59	145	nc	99	146	10

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	87	11	53	0	0	0	0	4	27	150	91	222
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	71	8	53	0	0	0	0	4	11	99	89	127
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	9	3	nc	0	0	0	0	0	0	11	nc	95
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	2	0
Helicon Lake	2	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	5	0	0	0	0	0	0	0	16	40	0	0
Lea Valley:	52	0	114	0	0	0	0	1	8	298	83	150
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	0	0	39	0	0	0	0	nc	nc	36	5	117
Stanstead Abbotts Lakes - N lake	0	0	0	0	0	0	0	1	0	22	2	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	7	9	0	0
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0	0
Cheshunt GPs:	52	0	75	0	0	0	0	0	1	231	76	33
Cheshunt GPs:
Herts:	8	0	25	0	0	0	0	0	0	208	72	32
Herts:
Bowyers Water	8	0	25	0	0	0	nc	0	nc	207	72	32
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	1	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:	44	0	2	0	0	0	0	0	1	23	0	0
ex-Herts:
Friday Lake	44	0	0	0	0	0	0	0	1	23	0	0
Hooks Marsh GP	0	0	2	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	48	0	0	0	0	0	0	0	4	1
Essex:
Hall Marsh Scrape	0	0	48	0	0	0	0	0	0	0	4	1
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	0	1	0
Panshanger Park	0	1	1	0	0	nc	nc	nc	15	nc	1	0
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	2	0	0	0
Verulamium Park	0	0	0	nc	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	4	0	0	nc	nc	0	0	0	0	4	4	0
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	8	0	0	0	0	0	0	0	8	28	2	10
Tring Reservoirs	239	120	110	1	0	0	0	0	nc	401	448	115

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	82	15	7	13	8	11	74	38	59	89	115	187
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	34	6	2	1	1	0	22	26	19	63	78	86
Maple Lodge NR	0	0	5	12	7	11	27	3	1	0	0	0
Lynsters Lake	8	8	nc	0	0	0	8	0	9	4	nc	47
Pynesfield North/South Lakes	7	0	0	0	0	0	0	0	0	0	26	21
Helicon Lake	18	1	0	0	0	0	0	0	0	0	2	10
Troy Mill Lake	15	0	0	0	0	0	17	9	30	22	9	23
Lea Valley:	351	197	221	28	38	35	132	137	510	589	378	394
Lea Valley:
East Hyde	14	15	6	0	2	0	0	0	0	12	12	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	0	3
Amwell NR - others	48	41	22	8	12	33	52	nc	nc	169	83	90
Stanstead Abbotts Lakes - N lake	81	27	21	12	17	0	41	82	52	74	78	40
Rye Meads	75	86	126	nc	nc	nc	nc	nc	429	270	103	53
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	13	29	73
Cheshunt GPs:	133	28	46	8	7	2	39	55	29	51	73	135
Cheshunt GPs:
Herts:	73	12	14	0	0	0	4	6	20	29	57	121
Herts:
Bowyers Water	52	1	0	0	0	0	nc	2	nc	26	52	84
Cheshunt Lake	2	2	0	0	0	0	0	0	0	0	2	4
Northmet Lake	8	2	4	0	0	0	4	4	10	2	2	2
Slipe Lane Lake	0	3	4	0	0	0	0	0	0	0	0	8
Turnford Lakes	11	4	6	0	0	0	0	0	10	1	1	23
ex-Herts:	60	8	22	6	3	2	35	49	9	22	14	13
ex-Herts:
Friday Lake	15	1	0	0	0	0	0	0	0	20	14	10
Hooks Marsh GP	3	2	2	2	2	1	14	40	6	2	0	2
Met Police Pit	42	5	6	0	0	0	0	0	1	0	0	0
Seventy Acres Lake	0	0	14	4	1	1	21	9	2	0	0	1
Essex:	0	8	10	2	4	0	0	0	0	0	2	1
Essex:
Hall Marsh Scrape	0	8	10	2	4	0	0	0	0	0	2	1
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	3	0	12	4	1	0	0	0	13	6	20	6
Panshanger Park	172	66	35	16	10	nc	nc	nc	72	nc	99	145
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	0	0	0
Verulamium Park	0	0	4	nc	3	0	0	5	0	8	2	2
Tyttenhanger GPs - all	20	18	8	nc	nc	0	0	26	22	11	7	14
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	18	3	14	17	0	8	55	15	9	44	63	73
Tring Reservoirs	45	44	33	17	11	6	19	25	nc	34	28	81

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	4	11	11	2	0	0	2	31	35	35	22	15
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	0	0	7	0	0	0	0	0	0	2	0	0
Maple Lodge NR	4	10	3	2	0	0	2	31	35	33	22	15
Lynsters Lake	0	1	nc	0	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	0	1	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:	147	119	61	9	0	2	0	0	108	135	100	144
Lea Valley:
East Hyde	4	6	0	0	0	0	0	0	0	0	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	6	12	2	4	0	2	0	nc	nc	21	14	16
Stanstead Abbotts Lakes - N lake	17	7	8	3	0	0	0	0	0	23	5	0
Rye Meads	85	89	47	nc	nc	nc	nc	nc	102	80	57	124
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0	0
Cheshunt GPs:	35	5	4	2	0	0	0	0	6	11	24	4
Cheshunt GPs:
Herts:	15	0	0	0	0	0	0	0	0	1	2	2
Herts:
Bowyers Water	7	0	0	0	0	0	nc	0	nc	0	1	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	5	0	0	0	0	0	0	0	0	0	0	2
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	1	0
Turnford Lakes	3	0	0	0	0	0	0	0	0	1	0	0
ex-Herts:	13	0	0	0	0	0	0	0	3	10	16	2
ex-Herts:
Friday Lake	11	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	1	8	15	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	2	0	0	0	0	0	0	0	2	2	1	2
Essex:	7	5	4	2	0	0	0	0	3	0	6	0
Essex:
Hall Marsh Scrape	7	5	4	2	0	0	0	0	3	0	6	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	43	2	0	0	0	nc	nc	nc	2	nc	4	91
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	3	0	1
Verulamium Park	0	0	0	nc	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	9	27	0	nc	nc	4	0	3	9	9	14	18
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	2	2	0	2	0	0	0	0	0	0	0	0
Tring Reservoirs	628	71	162	18	0	0	7	102	nc	732	412	345

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	113	134	112	86	63	78	115	110	110	73	118	112
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	9	7
Batchworth Lake	20	38	31	16	17	19	36	27	12	8	19	19
Stocker's and Bury Lakes	48	49	39	29	23	35	47	30	16	35	48	42
Maple Lodge NR	19	25	21	13	14	16	11	30	43	12	13	14
Lynsters Lake	6	3	nc	11	2	2	0	0	1	13	nc	9
Pynesfield North/South Lakes	6	5	3	7	4	1	0	13	10	0	9	4
Helicon Lake	2	8	14	1	2	4	14	5	28	4	18	12
Troy Mill Lake	12	6	4	9	1	1	7	5	0	1	2	5
Lea Valley:	444	394	305	222	200	170	226	226	278	304	322	376
Lea Valley:
East Hyde	33	22	16	12	10	12	12	12	12	12	22	nc
Brocket Park	10	11	5	13	10	9	5	18	6	5	8	17
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	21	11	6	nc	nc	nc	nc	nc	nc	14	9	6
Amwell NR - others	43	29	9	38	30	10	46	nc	nc	25	43	37
Stanstead Abbotts Lakes - N lake	43	44	19	18	26	12	34	36	27	19	16	10
Rye Meads	53	71	79	nc	nc	nc	nc	nc	116	38	59	83
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	12	4	15
Cheshunt GPs:	241	206	171	141	124	127	129	160	117	179	161	208
Cheshunt GPs:
Herts:	130	101	98	66	59	71	69	89	48	98	36	83
Herts:
Bowyers Water	21	14	15	13	15	10	nc	18	nc	13	14	12
Cheshunt Lake	9	15	9	1	7	7	0	2	4	5	0	5
Northmet Lake	93	62	63	50	32	45	65	67	37	76	20	56
Slipe Lane Lake	4	4	8	0	4	1	0	0	3	2	2	2
Turnford Lakes	3	6	3	2	1	8	4	2	4	2	0	8
ex-Herts:	111	100	69	65	56	54	56	71	62	81	108	119
ex-Herts:
Friday Lake	0	1	4	0	2	1	3	0	0	0	0	0
Hooks Marsh GP	23	28	9	8	24	21	17	28	12	10	10	21
Met Police Pit	2	4	5	7	1	0	0	7	0	5	3	5
Seventy Acres Lake	86	67	51	50	29	32	36	36	50	66	95	93
Essex:	0	5	4	10	9	2	4	0	7	0	17	6
Essex:
Hall Marsh Scrape	0	5	4	10	9	2	4	0	7	0	17	6
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	57	28	43	30	10	59	29	70	45	54	81	55
Panshanger Park	192	106	80	44	55	nc	nc	nc	29	nc	51	150
Fairlands Valley Park	nc	nc	140	90	nc	89	200	260	259	199	208	159
Verulamium Park	108	56	48	nc	42	62	43	25	20	27	20	27
Tyttenhanger GPs - all	68	13	17	nc	nc	19	33	36	61	63	118	110
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	23	3	6	9	7	17	7	5	8	9	0	12
Tring Reservoirs	161	54	69	70	97	138	314	252	nc	339	144	0

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	24	36	18	6	2	2	4	12	21	28	30	72
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	20	29	8	2	0	0	0	0	0	13	19	64
Maple Lodge NR	0	2	10	4	2	0	4	12	14	15	5	4
Lynsters Lake	0	3	nc	0	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	2	0	0	0	0	0	0	0	0	0	2
Helicon Lake	2	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	2	0	0	0	0	2	0	0	7	0	6	2
Lea Valley:	169	174	183	5	3	0	4	13	115	173	200	181
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	4	3
Amwell NR - others	15	11	16	4	3	0	3	nc	nc	33	21	32
Stanstead Abbotts Lakes - N lake	8	12	6	0	0	0	0	0	2	16	14	18
Rye Meads	66	45	93	nc	nc	nc	nc	nc	68	41	75	48
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0	0
Cheshunt GPs:	80	106	68	1	0	0	1	13	45	83	86	80
Cheshunt GPs:
Herts:	37	28	12	0	0	0	0	0	2	2	19	43
Herts:
Bowyers Water	6	2	0	0	0	0	nc	0	nc	0	3	1
Cheshunt Lake	4	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	27	24	8	0	0	0	0	0	2	2	9	22
Slipe Lane Lake	0	2	0	0	0	0	0	0	0	0	4	10
Turnford Lakes	0	0	4	0	0	0	0	0	0	0	3	10
ex-Herts:	43	68	27	1	0	0	1	13	43	81	67	30
ex-Herts:
Friday Lake	12	30	0	0	0	0	0	0	0	1	9	0
Hooks Marsh GP	17	10	12	0	0	0	1	11	5	36	23	9
Met Police Pit	8	24	11	0	0	0	0	0	0	3	16	0
Seventy Acres Lake	6	4	4	1	0	0	0	2	38	41	19	21
Essex:	0	10	29	0	0	0	0	0	0	0	0	7
Essex:
Hall Marsh Scrape	0	10	29	0	0	0	0	0	0	0	0	7
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	3	5	0
Panshanger Park	6	16	1	0	0	nc	nc	nc	0	nc	13	7
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	2	0	0	0
Verulamium Park	5	5	3	nc	0	0	0	0	1	1	0	4
Tyttenhanger GPs - all	6	14	12	nc	nc	0	0	0	6	3	14	30
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	16	14	85	24	0	1	0	2	6	20	18	53
Tring Reservoirs	93	127	46	35	0	1	2	58	nc	233	126	123

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	145	29	47	25	26	15	21	24	36	53	54	125
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	5	2	2	0	0	0	0	0	0	0	2	2
Stocker's and Bury Lakes	65	13	22	6	12	1	11	22	24	37	26	39
Maple Lodge NR	0	4	15	17	13	0	7	2	8	0	0	1
Lynsters Lake	0	2	nc	1	0	0	0	0	0	15	nc	37
Pynesfield North/South Lakes	13	6	3	0	0	1	0	0	0	1	12	20
Helicon Lake	5	2	5	0	0	0	0	0	0	0	1	6
Troy Mill Lake	57	0	0	1	1	13	3	0	4	0	13	20
Lea Valley:	104	62	47	16	7	9	9	4	2	94	54	38
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	4	3	9	nc	nc	nc	nc	nc	nc	6	19	3
Amwell NR - others	41	11	3	3	3	5	4	nc	nc	63	9	10
Stanstead Abbotts Lakes - N lake	12	11	3	7	1	1	5	3	0	14	15	7
Rye Meads	3	16	24	nc	nc	nc	nc	nc	1	3	4	1
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	1	2	3
Cheshunt GPs:	44	21	8	6	3	3	0	1	1	7	5	14
Cheshunt GPs:
Herts:	21	7	2	1	0	0	0	0	0	5	3	13
Herts:
Bowyers Water	15	7	2	0	0	0	nc	0	nc	4	3	13
Cheshunt Lake	5	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	1	0	0	1	0	0	0	0	0	1	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:	23	14	6	5	3	3	0	1	1	2	2	1
ex-Herts:
Friday Lake	1	0	0	0	0	0	0	0	0	0	1	0
Hooks Marsh GP	6	2	0	0	0	0	0	0	0	0	0	0
Met Police Pit	9	1	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	7	11	6	5	3	3	0	1	1	2	1	1
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	1	1	1	0	0	0	0	0	0	0	0	0
Panshanger Park	18	13	8	1	0	nc	nc	nc	14	nc	11	5
Fairlands Valley Park	nc	nc	0	0	nc	2	0	0	0	0	0	0
Verulamium Park	3	7	7	nc	0	0	0	0	0	0	0	6
Tyttenhanger GPs - all	8	1	0	nc	nc	1	1	1	6	6	10	14
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	27	12	9	0	0	3	134	49	10	36	13	22
Tring Reservoirs	188	61	21	3	1	1	9	23	nc	151	116	96

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	327	322	229	183	52	146	132	82	174	247	333	379
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	16	21
Batchworth Lake	20	34	12	7	0	8	4	1	0	12	15	7
Stocker's and Bury Lakes	91	115	120	74	0	40	69	58	90	133	103	138
Maple Lodge NR	0	14	21	16	20	21	16	14	8	0	1	7
Lynsters Lake	26	82	nc	38	3	20	0	0	4	33	nc	50
Pynesfield North/South Lakes	49	36	29	15	4	27	9	4	24	25	51	39
Helicon Lake	34	40	20	12	10	7	2	5	8	10	17	22
Troy Mill Lake	107	1	27	21	15	23	32	0	40	34	130	95
Lea Valley:	694	627	621	250	162	174	132	144	356	607	528	599
Lea Valley:
East Hyde	0	0	0	0	2	2	0	0	0	0	0	nc
Brocket Park	11	10	5	8	23	21	18	11	4	7	0	1
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	36	34	80	nc	nc	nc	nc	nc	nc	53	51	39
Amwell NR - others	153	97	64	0	27	59	42	nc	nc	92	84	82
Stanstead Abbotts Lakes - N lake	123	84	75	66	43	22	34	45	76	88	116	124
Rye Meads	49	79	97	nc	nc	nc	nc	nc	223	71	46	56
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	84	54	121
Cheshunt GPs:	322	323	300	176	67	70	38	88	53	212	177	176
Cheshunt GPs:
Herts:	197	170	182	104	15	31	4	31	37	128	111	126
Herts:
Bowyers Water	34	40	41	35	10	11	nc	17	nc	49	23	22
Cheshunt Lake	23	11	24	0	0	0	0	0	0	0	9	6
Northmet Lake	72	59	79	37	0	14	2	14	24	34	44	50
Slipe Lane Lake	50	40	14	9	1	0	0	0	11	33	27	28
Turnford Lakes	18	20	24	23	4	6	2	0	2	12	8	20
ex-Herts:	125	142	114	65	48	39	34	57	16	84	65	44
ex-Herts:
Friday Lake	15	18	20	8	4	1	0	0	5	20	24	17
Hooks Marsh GP	33	33	12	7	15	7	3	35	3	8	6	9
Met Police Pit	36	21	22	0	0	0	0	0	1	33	26	6
Seventy Acres Lake	41	70	60	50	29	31	31	22	7	23	9	12
Essex:	0	11	4	7	4	0	0	0	0	0	1	6
Essex:
Hall Marsh Scrape	0	11	4	7	4	0	0	0	0	0	1	6
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	4	1	0	0	0	0	0	0
Panshanger Park	53	41	70	55	65	nc	nc	nc	46	nc	31	39
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	0	1	3
Verulamium Park	4	7	15	nc	20	18	1	3	0	2	0	6
Tyttenhanger GPs - all	30	0	29	nc	nc	16	2	8	6	6	18	10
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	92	89	160	47	13	16	222	121	46	85	77	79
Tring Reservoirs	152	174	196	183	96	42	103	195	nc	207	249	176

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	14	2	1	1	1	1	1	0	1	0	2	14
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	13	2	1	1	1	1	1	0	1	0	2	11
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	nc	0	0	0	0	0	0	0	nc	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	1	0	0	0	0	0	0	0	0	0	0	3
Lea Valley:	8	5	7	0	0	0	0	0	0	0	4	3
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	8	4	7	0	0	0	0	nc	nc	0	4	3
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	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0	0
Cheshunt GPs:	0	1	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:
Herts:	0	1	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	0	0	0	0	0	nc	0	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	1	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	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	nc	nc	nc	0	nc	0	0
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	0	0	0
Verulamium Park	0	0	0	nc	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	nc	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	1	0	0	0	0	0	0	0	0	0
Tring Reservoirs	2	3	2	0	0	0	0	0	nc	0	4	2

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	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	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	nc	0	0	0	0	0	0	0	nc	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	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
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	0	0	0	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	0	0	0	0	0	0	0	nc	nc	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	nc	nc	nc	nc	nc	nc	nc	nc	nc	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	nc	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	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	nc	nc	nc	0	nc	0	0
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	0	0	0
Verulamium Park	0	0	0	nc	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	nc	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	0	0	0	0	0	0	0	nc	0	0	0

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	2	4	5	9	6	11	7	8	12	10	5	5
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	1	0	0	0
Maple Lodge NR	2	2	5	9	6	11	7	8	10	10	5	5
Lynsters Lake	0	0	nc	0	0	0	0	0	0	0	nc	0
Pynesfield North/South Lakes	0	2	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	1	0	0	0
Lea Valley:	28	17	37	6	6	6	9	16	59	45	50	13
Lea Valley:
East Hyde	3	1	0	2	2	2	2	2	2	2	2	nc
Brocket Park	8	3	3	1	3	3	6	11	7	6	8	4
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	0	0	0	nc	nc	nc	nc	nc	nc	0	2	0
Amwell NR - others	0	0	2	0	0	0	0	nc	nc	5	4	1
Stanstead Abbotts Lakes - N lake	2	0	3	1	1	0	1	3	2	3	9	3
Rye Meads	13	11	28	nc	nc	nc	nc	nc	48	25	20	4
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0	1
Cheshunt GPs:	2	2	1	2	0	1	0	0	0	4	5	0
Cheshunt GPs:
Herts:	0	0	1	1	0	1	0	0	0	1	1	0
Herts:
Bowyers Water	0	0	0	0	0	0	nc	0	nc	1	1	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	1	1	0	1	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:	2	2	0	1	0	0	0	0	0	3	4	0
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	2	1	0	0	0	0	0	0	0	2	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	0	1	0	1	0	0	0	0	0	1	4	0
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	2	0	0	0	0	0	0	0	0	1
Panshanger Park	20	19	17	9	15	nc	nc	nc	47	nc	28	22
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	0	0	0
Verulamium Park	0	0	0	nc	0	0	0	4	2	0	0	0
Tyttenhanger GPs - all	0	0	0	nc	nc	0	0	0	0	0	0	0
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	2	0	2	5	1	2	4	1	1	2	1	1
Tring Reservoirs	12	6	6	4	2	0	0	5	nc	14	16	16

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	44	43	32	41	44	40	48	43	55	46	77	71
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	24	18
Batchworth Lake	0	0	1	1	2	4	7	3	6	3	4	4
Stocker's and Bury Lakes	22	29	19	20	20	9	16	18	27	19	20	12
Maple Lodge NR	0	0	2	2	2	4	2	2	1	0	0	0
Lynsters Lake	8	9	nc	7	1	5	8	3	2	2	nc	8
Pynesfield North/South Lakes	6	1	3	5	5	7	4	6	5	2	5	4
Helicon Lake	4	2	1	2	2	2	4	2	3	4	1	0
Troy Mill Lake	4	2	6	4	12	9	7	9	11	16	23	25
Lea Valley:	40	36	33	29	38	44	43	41	34	92	65	49
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	nc
Brocket Park	1	0	0	1	2	2	3	1	2	1	1	0
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	0	1	2	nc	nc	nc	nc	nc	nc	7	6	6
Amwell NR - others	1	3	1	5	7	6	8	nc	nc	7	2	3
Stanstead Abbotts Lakes - N lake	6	12	6	2	2	4	5	6	9	13	11	5
Rye Meads	0	0	0	nc	nc	nc	nc	nc	2	3	1	0
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	17	8	7
Cheshunt GPs:	32	20	24	21	27	32	27	34	21	44	36	28
Cheshunt GPs:
Herts:	11	7	7	8	12	13	1	14	6	20	15	15
Herts:
Bowyers Water	1	4	3	2	6	8	nc	9	nc	12	13	10
Cheshunt Lake	1	1	0	0	0	0	0	0	0	0	0	0
Northmet Lake	5	1	4	3	4	3	1	3	3	7	1	3
Slipe Lane Lake	2	1	0	2	0	0	0	1	2	0	1	2
Turnford Lakes	2	0	0	1	2	2	0	1	1	1	0	0
ex-Herts:	21	13	17	13	15	19	26	20	15	24	21	13
ex-Herts:
Friday Lake	2	1	1	2	2	0	0	2	1	2	1	0
Hooks Marsh GP	7	4	4	2	2	7	11	7	9	9	8	5
Met Police Pit	2	2	0	0	1	0	1	2	0	3	3	0
Seventy Acres Lake	10	6	12	9	10	12	14	9	5	10	9	8
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	Present	2	3	4	8	nc	nc	nc	3	nc	0	0
Fairlands Valley Park	nc	nc	6	8	nc	3	2	1	1	2	0	0
Verulamium Park	0	1	0	nc	0	0	0	0	1	0	0	0
Tyttenhanger GPs - all	24	20	25	nc	nc	10	14	15	18	14	19	22
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	12	5	7	18	15	22	39	53	60	45	32	15
Tring Reservoirs	40	31	20	33	23	25	20	21	nc	29	26	26

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	36	31	12	15	5	10	6	15	29	26	49	52
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	1	0	0	0	0	1	0	1	0	0	0	0
Stocker's and Bury Lakes	21	22	10	12	3	5	1	3	23	11	31	26
Maple Lodge NR	0	1	1	0	1	3	3	1	1	2	1	0
Lynsters Lake	1	2	nc	1	0	1	0	0	0	1	nc	2
Pynesfield North/South Lakes	0	2	0	0	0	0	1	0	0	1	0	0
Helicon Lake	2	2	0	1	1	0	0	1	0	0	2	3
Troy Mill Lake	11	2	1	1	0	0	1	9	5	11	15	21
Lea Valley:	116	79	79	71	66	42	45	40	99	129	105	123
Lea Valley:
East Hyde	3	2	1	3	3	2	2	0	2	3	2	nc
Brocket Park	9	2	0	1	3	1	7	3	6	8	4	4
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	0	0	0	nc	nc	nc	nc	nc	nc	1	0	0
Amwell NR - others	35	43	45	46	41	26	15	nc	nc	42	26	30
Stanstead Abbotts Lakes - N lake	6	5	4	5	4	4	3	5	7	8	9	6
Rye Meads	5	0	0	nc	nc	nc	nc	nc	25	20	5	0
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	4	4	6
Cheshunt GPs:	58	27	29	16	15	9	18	32	59	43	55	77
Cheshunt GPs:
Herts:	30	14	7	9	2	3	4	12	13	5	16	32
Herts:
Bowyers Water	1	1	0	1	0	0	nc	0	nc	2	3	5
Cheshunt Lake	4	1	1	3	1	1	0	0	1	0	0	0
Northmet Lake	2	3	3	0	0	1	3	9	12	2	11	18
Slipe Lane Lake	1	4	2	2	1	1	1	2	0	0	2	0
Turnford Lakes	22	5	1	3	0	0	0	1	0	1	0	9
ex-Herts:	27	13	22	7	12	3	14	20	46	38	39	45
ex-Herts:
Friday Lake	1	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	14	7	17	4	7	2	4	10	7	17	17	18
Met Police Pit	0	1	2	2	4	1	4	0	1	1	2	0
Seventy Acres Lake	12	5	3	1	1	0	6	10	38	20	20	27
Essex:	1	0	0	0	1	3	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	1	0	0	0	1	3	0	0	0	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	0	0	0	0	0	1	0	1	0	2	1	0
Panshanger Park	3	2	4	3	6	nc	nc	nc	3	nc	2	4
Fairlands Valley Park	nc	nc	3	1	nc	0	1	2	0	2	3	6
Verulamium Park	0	0	1	nc	0	0	0	0	4	6	2	27
Tyttenhanger GPs - all	19	39	9	nc	nc	1	1	3	8	8	14	12
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	13	0	0	0	1	1	0	7	68	13	24	10
Tring Reservoirs	63	40	0	30	29	33	24	29	nc	41	51	0

Grey HeronTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	17	23	12	23	18	13	23	13	11	9	12	21
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0	0
Batchworth Lake	0	0	0	0	0	1	2	3	1	2	0	1
Stocker's and Bury Lakes	8	18	11	17	18	9	13	5	5	3	5	8
Maple Lodge NR	1	0	0	1	0	1	3	1	1	1	2	2
Lynsters Lake	3	2	nc	1	0	0	1	0	0	0	nc	4
Pynesfield North/South Lakes	2	1	0	0	0	1	0	1	2	0	0	0
Helicon Lake	1	1	0	0	0	1	3	0	0	1	1	0
Troy Mill Lake	2	1	1	4	0	0	1	3	2	2	4	6
Lea Valley:	32	28	20	22	23	20	18	14	20	31	19	24
Lea Valley:
East Hyde	3	2	3	0	2	2	0	2	2	1	2	nc
Brocket Park	1	6	0	1	1	1	1	1	1	1	2	0
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	0	0	1	nc	nc	nc	nc	nc	nc	0	0	0
Amwell NR - others	12	13	11	12	15	7	9	nc	nc	5	1	3
Stanstead Abbotts Lakes - N lake	2	2	0	2	1	1	0	1	3	2	2	0
Rye Meads	5	2	2	nc	nc	nc	nc	nc	6	6	3	2
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	3	0	2
Cheshunt GPs:	9	3	3	7	4	9	8	10	8	13	9	17
Cheshunt GPs:
Herts:	1	1	0	3	1	1	0	2	2	1	2	3
Herts:
Bowyers Water	0	0	0	1	0	0	nc	2	nc	1	2	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	1	0	0	1	0	1	0	0	1	0	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	1	0	0	0
Turnford Lakes	0	1	0	1	1	0	0	0	0	0	0	2
ex-Herts:	6	2	2	2	2	4	8	7	6	11	7	14
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	1	0	1
Hooks Marsh GP	3	2	2	2	2	4	3	3	3	6	1	6
Met Police Pit	0	0	0	0	0	0	0	1	0	0	2	0
Seventy Acres Lake	3	0	0	0	0	0	5	3	3	4	4	7
Essex:	2	0	1	2	1	4	0	1	0	1	0	0
Essex:
Hall Marsh Scrape	2	0	1	2	1	4	0	1	0	1	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	2	0	1	0	0	0	0	0	0	0	0	2
Panshanger Park	0	0	1	1	2	nc	nc	nc	2	nc	1	3
Fairlands Valley Park	nc	nc	0	0	nc	0	0	0	0	1	2	0
Verulamium Park	2	7	8	nc	0	0	0	2	0	0	1	2
Tyttenhanger GPs - all	4	6	5	nc	nc	3	3	2	3	0	4	9
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	1	0	0	0	1	0	0	0	1	4	2	2
Tring Reservoirs	7	12	13	15	10	11	6	9	nc	13	14	18

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	26	35	38	32	24	17	26	34	37	53	65	74
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	26	28
Batchworth Lake	6	8	7	10	2	1	10	5	5	6	5	8
Stocker's and Bury Lakes	7	8	9	4	4	3	4	12	11	28	11	20
Maple Lodge NR	4	6	8	10	7	8	7	9	11	9	6	4
Lynsters Lake	0	0	nc	1	0	0	0	0	0	0	nc	1
Pynesfield North/South Lakes	3	3	3	1	3	0	0	2	2	7	12	6
Helicon Lake	2	7	8	3	7	0	2	4	2	1	3	4
Troy Mill Lake	4	3	3	3	1	5	3	2	6	2	2	3
Lea Valley:	153	158	175	50	67	47	62	61	171	156	175	128
Lea Valley:
East Hyde	30	17	15	12	10	12	9	11	14	12	11	nc
Brocket Park	16	0	23	8	10	7	20	16	22	23	26	31
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	2	3	9	nc	nc	nc	nc	nc	nc	6	6	2
Amwell NR - others	11	13	14	7	20	12	15	nc	nc	15	24	9
Stanstead Abbotts Lakes - N lake	9	5	12	6	12	6	12	10	5	10	7	3
Rye Meads	51	93	63	nc	nc	nc	nc	nc	121	60	76	51
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	11	5	8
Cheshunt GPs:	34	27	39	17	15	10	6	24	9	19	20	24
Cheshunt GPs:
Herts:	17	11	25	8	3	4	0	10	3	9	5	10
Herts:
Bowyers Water	10	6	12	3	2	2	nc	5	nc	6	3	5
Cheshunt Lake	0	0	8	0	0	1	0	0	0	0	0	0
Northmet Lake	3	4	2	2	0	1	0	3	2	2	2	3
Slipe Lane Lake	2	1	1	0	1	0	0	1	1	1	0	0
Turnford Lakes	2	0	2	3	0	0	0	1	0	0	0	2
ex-Herts:	17	14	12	6	11	6	3	14	5	9	14	13
ex-Herts:
Friday Lake	3	0	0	0	0	1	0	0	0	0	1	0
Hooks Marsh GP	6	4	2	1	4	2	2	6	3	1	1	6
Met Police Pit	0	1	4	0	0	0	0	2	0	0	1	1
Seventy Acres Lake	8	9	6	5	7	3	1	6	2	8	11	6
Essex:	0	2	2	3	1	0	3	0	1	1	1	1
Essex:
Hall Marsh Scrape	0	2	2	3	1	0	3	0	1	1	1	1
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	3	4	1	3	3	2	5	3	5	3	1	2
Panshanger Park	16	6	11	6	4	nc	nc	nc	7	nc	13	3
Fairlands Valley Park	nc	nc	22	17	nc	15	32	47	51	51	45	27
Verulamium Park	17	14	10	nc	8	13	16	16	21	29	13	25
Tyttenhanger GPs - all	19	27	19	nc	nc	5	16	12	23	31	21	15
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	4	5	5	5	1	3	0	4	2	8	4	1
Tring Reservoirs	48	25	27	5	4	4	32	52	nc	86	68	53

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	1110	813	418	385	261	282	385	725	1126	1031	795	1358
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	13	14
Batchworth Lake	13	18	22	26	26	22	19	31	39	25	18	18
Stocker's and Bury Lakes	491	304	144	95	75	85	124	275	473	518	480	581
Maple Lodge NR	3	19	10	16	18	16	10	9	15	7	7	0
Lynsters Lake	145	170	nc	62	21	50	30	37	168	77	nc	190
Pynesfield North/South Lakes	61	70	66	45	36	37	44	59	67	69	60	92
Helicon Lake	80	62	37	29	25	10	28	45	70	71	95	83
Troy Mill Lake	317	170	139	112	60	62	130	269	294	264	122	380
Lea Valley:	1718	1241	1054	555	388	478	688	839	1289	2389	2339	2294
Lea Valley:
East Hyde	15	17	22	17	12	10	15	14	19	22	12	nc
Brocket Park	115	83	67	49	38	51	89	81	97	80	92	110
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	22	11	24	nc	nc	nc	nc	nc	nc	21	19	16
Amwell NR - others	285	144	85	92	74	95	232	nc	nc	489	339	351
Stanstead Abbotts Lakes - N lake	171	89	89	47	51	64	78	88	155	236	181	211
Rye Meads	169	156	155	nc	nc	nc	nc	nc	667	497	527	137
Broxbourne GP	nc	nc	nc	nc	nc	nc	nc	nc	nc	236	301	362
Cheshunt GPs:	941	741	612	350	213	258	274	656	351	808	868	1107
Cheshunt GPs:
Herts:	695	493	374	176	109	134	91	450	177	672	660	895
Herts:
Bowyers Water	251	135	78	55	41	67	nc	269	nc	400	470	501
Cheshunt Lake	26	14	25	5	3	2	2	2	5	4	1	10
Northmet Lake	159	138	78	40	31	35	15	45	45	75	72	126
Slipe Lane Lake	99	95	111	51	23	14	54	85	58	99	78	133
Turnford Lakes	160	111	82	25	11	16	20	49	69	94	39	125
ex-Herts:	246	239	232	165	100	123	182	206	173	134	203	211
ex-Herts:
Friday Lake	13	11	19	13	16	8	15	32	28	20	34	13
Hooks Marsh GP	61	80	57	36	24	36	21	51	12	16	11	15
Met Police Pit	77	56	56	22	17	27	19	29	61	36	89	105
Seventy Acres Lake	95	92	100	94	43	52	127	94	72	62	69	78
Essex:	0	9	6	9	4	1	1	0	1	2	5	1
Essex:
Hall Marsh Scrape	0	9	6	9	4	1	1	0	1	2	5	1
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	4	2	2	2	2	1	0	3	3	2	2	4
Panshanger Park	180	160	121	102	Present	nc	nc	nc	166	nc	158	182
Fairlands Valley Park	nc	nc	42	28	nc	28	45	56	52	42	38	50
Verulamium Park	80	90	83	nc	78	75	72	45	59	57	56	62
Tyttenhanger GPs - all	93	101	93	nc	nc	38	48	43	37	60	70	90
Aldenham Reservoir	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Hilfield Park Reservoir	25	45	66	69	58	75	150	169	115	163	208	166
Tring Reservoirs	462	224	258	202	152	205	622	656	nc	939	666	126