Herts Bird Club - WeBS 2025

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 2025 the Hertfordshire counts were organised by Cath Patrick (Lee Valley from Ware south) or Martin Ketcher (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 2025 the core count were the following Sundays: 12 Jan, 16 Feb, 16 Mar, 13 Apr, 25 May, 15 Jun, 13 Jul, 10 Aug, 7 Sep, 12 Oct, 9 Nov, 7 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 Martin for the 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. If you are able to help in the Lee Valley please contact Cath Patrick (c/o LVRP, Myddleton House, Bull's Cross, Enfield, EN2, 9HG). For elsewhere in Hertfordshire please contact the Martin Ketcher. Thank you.

Mute Swan
Canada Goose
Wigeon
Gadwall
Teal
Mallard
Shoveler
Pochard
Tufted Duck
Goldeneye
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:	24	25	24	10	11	8	13	31	41	28	35	28
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	7	4	4	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	12	15	17	4	2	4	4	17	24	18	10	6
Maple Lodge NR	0	2	1	2	2	2	2	0	1	0	0	nc
Lynsters Lake	3	0	nc	nc	6	2	0	3	2	0	4	2
Pynesfield North/South Lakes	2	3	1	2	1	0	4	9	9	6	5	10
Helicon Lake	0	0	1	1	0	0	1	0	4	1	4	0
Troy Mill Lake	0	1	0	1	0	0	2	2	1	3	12	10
Lea Valley:	40	69	47	41	22	27	18	25	63	69	75	50
Lea Valley:
East Hyde	2	2	2	2	2	4	4	4	4	4	4	2
Brocket Park	2	2	0	2	2	2	2	2	5	6	2	2
Stanborough Lakes North	2	2	11	14	2	nc	2	3	5	3	4	3
Stanborough Lakes South	0	4	0	1	2	nc	0	0	0	2	3	4
King's Meads	0	nc	nc	nc	2	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	0	0	0	1	nc	1	0	0	0	1	0	0
Amwell NR - others	12	6	7	3	1	0	0	0	5	0	8	7
Stanstead Innings	7	11	3	2	1	4	2	4	11	6	4	6
Rye Meads	0	15	12	nc	nc	nc	nc	nc	22	21	14	7
Broxbourne GP	9	4	4	4	3	1	1	2	1	5	9	2
Cheshunt GPs:	6	23	8	12	7	15	7	10	10	21	27	17
Cheshunt GPs:
Herts:	4	7	8	5	4	5	2	6	2	2	6	7
Herts:
Bowyers Water	0	1	0	2	2	2	2	1	2	2	3	2
Cheshunt Lake	0	1	0	0	0	2	0	0	0	0	0	2
North Met Pit	2	3	2	0	2	1	0	4	0	0	0	0
Slipe Lane Pits	0	0	2	1	0	0	0	0	0	0	2	0
Ashley Pit	2	2	4	2	0	0	0	1	0	0	1	3
ex-Herts:	2	5	0	7	3	10	5	4	0	6	8	2
ex-Herts:
Friday Lake	0	1	0	2	0	0	0	0	0	0	0	0
Hooks Marsh GP	0	0	0	2	0	8	4	0	0	3	0	0
Met Police Pit	0	2	0	0	0	0	0	2	0	0	3	0
Seventy Acres Lake	2	2	0	3	3	2	1	2	nc	3	5	2
Essex:	0	11	0	0	0	0	0	0	8	13	13	8
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	0	11	nc	nc	nc	nc	nc	nc	8	13	13	8
Radwell Mill	34	36	30	nc	22	31	22	18	nc	29	34	32
Digswell Lake	0	0	nc	0	2	nc	1	2	0	nc	2	nc
Panshanger Park	0	nc	2	2	3	nc	4	nc	12	6	5	2
Fairlands Valley Park	2	2	2	5	3	2	2	2	3	3	3	3
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	2
Verulamium Park	6	6	8	6	16	4	5	1	1	0	0	0
Tyttenhanger GPs - all	4	0	3	0	0	3	2	nc	nc	nc	nc	nc
Aldenham Reservoir	2	1	1	2	2	2	4	4	4	2	2	1
Hilfield Park Reservoir	0	nc	nc	nc	3	4	2	2	6	4	2	0
Tring Reservoirs	31	nc	16	17	30	66	62	65	38	56	41	32

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	186	146	82	52	65	109	173	80	54	127	131	4
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	117	50	67	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	65	79	8	35	40	96	97	57	38	127	128	4
Maple Lodge NR	0	5	5	14	0	0	7	14	16	0	3	nc
Lynsters Lake	4	12	nc	nc	25	13	61	0	0	0	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	6	0	0	0	0	0
Helicon Lake	0	0	0	2	0	0	2	9	0	0	0	0
Troy Mill Lake	0	0	2	1	0	0	0	0	0	0	0	0
Lea Valley:	556	582	332	294	212	340	514	427	307	549	268	326
Lea Valley:
East Hyde	51	55	66	88	97	53	47	39	70	44	31	22
Brocket Park	63	28	33	3	1	13	39	40	13	37	3	88
Stanborough Lakes North	90	56	27	24	28	nc	55	39	110	22	0	2
Stanborough Lakes South	2	8	0	2	12	nc	41	35	13	10	10	8
King's Meads	0	nc	nc	nc	0	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	4	14	9	4	nc	0	33	2	9	0	5	4
Amwell NR - others	234	81	77	56	29	36	23	99	15	41	3	33
Stanstead Innings	6	30	24	20	3	18	24	2	14	96	20	23
Rye Meads	0	8	22	nc	nc	nc	nc	nc	4	0	1	0
Broxbourne GP	4	16	8	12	7	12	19	0	0	12	2	3
Cheshunt GPs:	102	286	66	85	35	208	233	171	59	287	193	143
Cheshunt GPs:
Herts:	37	11	33	34	11	105	144	72	12	39	46	4
Herts:
Bowyers Water	36	6	12	17	7	52	72	56	8	38	45	0
Cheshunt Lake	0	1	7	0	2	2	0	0	0	1	1	4
North Met Pit	1	4	14	8	2	51	72	16	4	0	0	0
Slipe Lane Pits	0	0	0	2	0	0	0	0	0	0	0	0
Ashley Pit	0	0	0	7	0	0	0	0	0	0	0	0
ex-Herts:	0	7	31	51	24	103	89	99	0	3	6	14
ex-Herts:
Friday Lake	0	0	0	0	2	2	10	0	0	0	0	0
Hooks Marsh GP	0	7	8	12	3	21	21	16	0	1	0	2
Met Police Pit	0	0	6	3	1	0	0	4	0	0	4	1
Seventy Acres Lake	0	0	17	36	18	80	58	79	nc	2	2	11
Essex:	65	268	2	0	0	0	0	0	47	245	141	125
Essex:
Hall Marsh Scrape	9	0	2	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	56	268	nc	nc	nc	nc	nc	nc	47	245	141	125
Radwell Mill	6	4	8	nc	3	24	20	10	nc	4	3	4
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	0	nc	7	19	26	nc	49	nc	11	2	0	8
Fairlands Valley Park	174	98	16	19	25	186	191	94	172	500	260	48
Hatfield Park	0	7	nc	5	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	90	65	40	37	63	130	43	72	41	10	70	49
Tyttenhanger GPs - all	46	17	10	20	0	14	20	nc	nc	nc	nc	nc
Aldenham Reservoir	60	28	1	0	0	49	50	2	1	1	0	70
Hilfield Park Reservoir	0	nc	nc	nc	12	133	81	21	0	1	57	0
Tring Reservoirs	16	nc	77	31	31	271	228	216	134	165	1	30

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	13	0	8	0	0	0	0	3	0	2	4	4
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	0	0	8	0	0	0	0	0	0	0	3	2
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	nc
Lynsters Lake	0	0	nc	nc	0	0	0	3	0	0	0	0
Pynesfield North/South Lakes	13	0	0	0	0	0	0	0	0	2	1	2
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:	47	4	0	0	0	0	0	0	0	15	20	9
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	0
Stanborough Lakes North	0	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	3	nc	nc	nc	0	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	0	0	0
Amwell NR - others	18	0	0	0	0	0	0	0	0	14	13	8
Stanstead Innings	0	0	0	0	0	0	0	0	0	1	0	0
Rye Meads	5	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	2	0
Cheshunt GPs:	21	4	0	0	0	0	0	0	0	0	5	1
Cheshunt GPs:
Herts:	21	0	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	21	0	0	0	0	0	0	0	0	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Pits	0	0	0	0	0	0	0	0	0	0	0	0
Ashley Pit	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	nc	0	0	0
Essex:	0	4	0	0	0	0	0	0	0	0	5	1
Essex:
Hall Marsh Scrape	0	2	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	0	2	nc	nc	nc	nc	nc	nc	0	0	5	1
Radwell Mill	0	0	0	nc	0	0	0	0	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	1	nc	5	0	0	nc	0	nc	0	11	32	38
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	0	0	0	0	0	0	0	0	0	12
Hilfield Park Reservoir	33	nc	nc	nc	0	0	0	0	0	0	0	7
Tring Reservoirs	197	nc	44	1	1	0	0	0	3	48	189	222

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	50	48	27	29	19	16	33	37	71	31	37	58
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	9	7	6	10	5	0	12	25	58	14	1	15
Maple Lodge NR	0	3	5	17	13	16	21	11	12	0	12	nc
Lynsters Lake	6	14	nc	nc	1	0	0	0	0	15	7	11
Pynesfield North/South Lakes	29	23	7	0	0	0	0	0	1	2	17	32
Helicon Lake	1	1	2	0	0	0	0	0	0	0	0	0
Troy Mill Lake	5	0	7	2	0	0	0	1	0	0	0	0
Lea Valley:	370	271	254	58	11	69	225	192	436	332	413	284
Lea Valley:
East Hyde	18	0	6	2	0	0	0	0	0	0	0	0
Brocket Park	0	8	4	4	2	11	8	2	7	31	14	10
Stanborough Lakes North	0	2	33	3	2	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	17	nc	nc	nc	0	nc	nc	6	2	0	nc	nc
Amwell GP - Ware / Thrift GP	0	0	3	8	nc	0	11	5	0	0	0	0
Amwell NR - others	95	21	11	14	3	4	81	40	31	14	65	47
Stanstead Innings	23	4	2	7	1	4	32	109	113	27	23	19
Rye Meads	119	115	177	nc	nc	nc	nc	nc	240	218	144	116
Broxbourne GP	52	65	7	0	0	0	0	0	0	7	43	53
Cheshunt GPs:	46	56	11	20	3	50	93	30	43	35	124	39
Cheshunt GPs:
Herts:	0	5	11	2	1	0	0	14	12	0	17	4
Herts:
Bowyers Water	0	2	7	1	1	0	0	6	0	0	0	2
Cheshunt Lake	0	0	0	1	0	0	0	0	0	0	3	0
North Met Pit	0	3	0	0	0	0	0	8	4	0	13	0
Slipe Lane Pits	0	0	2	0	0	0	0	0	4	0	0	0
Ashley Pit	0	0	2	0	0	0	0	0	4	0	1	2
ex-Herts:	2	16	0	18	2	50	93	16	3	2	5	3
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	3	0	0	0
Hooks Marsh GP	0	14	0	7	0	0	7	7	0	2	2	1
Met Police Pit	0	0	0	3	0	0	0	0	0	0	0	0
Seventy Acres Lake	2	2	0	8	2	50	86	9	nc	0	3	2
Essex:	44	35	0	0	0	0	0	0	28	33	102	32
Essex:
Hall Marsh Scrape	2	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	42	35	nc	nc	nc	nc	nc	nc	28	33	102	32
Radwell Mill	0	0	2	nc	11	0	0	2	nc	6	6	0
Digswell Lake	1	0	nc	9	5	nc	5	6	2	nc	0	nc
Panshanger Park	100	nc	29	22	16	nc	34	nc	136	80	68	151
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	1	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	2	9	1	0	0	0	0	0	0	0
Tyttenhanger GPs - all	2	20	22	4	0	15	20	nc	nc	nc	nc	nc
Aldenham Reservoir	0	3	2	2	8	0	2	6	0	0	14	2
Hilfield Park Reservoir	42	nc	nc	nc	4	8	104	14	9	2	0	6
Tring Reservoirs	55	nc	4	28	45	40	68	30	10	3	66	111

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	2	10	2	0	0	0	3	0	13	33	0	1
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	3	0	0	0
Maple Lodge NR	0	7	2	0	0	0	3	0	10	33	0	nc
Lynsters Lake	0	0	nc	nc	0	0	0	0	0	0	0	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	2	1	0	0	0	0	0	0	0	0	0	1
Lea Valley:	108	83	85	11	0	1	1	1	28	138	23	52
Lea Valley:
East Hyde	0	1	1	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Stanborough Lakes North	0	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	0	nc	nc	nc	0	nc	nc	0	0	37	nc	nc
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	0	0	0
Amwell NR - others	0	3	17	3	0	1	1	1	4	8	3	10
Stanstead Innings	0	11	10	8	0	0	0	0	2	0	0	0
Rye Meads	80	51	54	nc	nc	nc	nc	nc	22	89	17	28
Broxbourne GP	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:	28	17	3	0	0	0	0	0	0	4	3	14
Cheshunt GPs:
Herts:	2	0	3	0	0	0	0	0	0	2	3	2
Herts:
Bowyers Water	0	0	1	0	0	0	0	0	0	2	3	2
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	2	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Pits	0	0	0	0	0	0	0	0	0	0	0	0
Ashley Pit	0	0	2	0	0	0	0	0	0	0	0	0
ex-Herts:	20	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	20	0	0	0	0	0	0	0	nc	0	0	0
Essex:	6	17	0	0	0	0	0	0	0	2	0	12
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	6	17	nc	nc	nc	nc	nc	nc	0	2	0	12
Radwell Mill	0	1	0	nc	0	0	0	0	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	24	nc	11	8	0	nc	0	nc	10	12	16	56
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	29	15	6	0	1	0	2	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	0	0	0	0	1	0	0	4	7	0
Hilfield Park Reservoir	0	nc	nc	nc	0	0	0	0	0	0	0	29
Tring Reservoirs	595	nc	58	27	0	3	5	2	151	157	462	745

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	54	61	51	40	24	30	36	18	94	77	32	36
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	12	13	10	nc	nc	nc	nc	nc	9	nc	nc	nc
Stocker's and Bury Lakes	20	28	16	13	5	8	19	6	41	33	9	24
Maple Lodge NR	5	7	13	21	15	14	17	8	37	35	9	nc
Lynsters Lake	0	2	nc	nc	0	0	0	0	0	0	2	2
Pynesfield North/South Lakes	0	2	4	0	0	0	0	3	7	7	10	2
Helicon Lake	4	1	1	3	0	0	0	0	0	2	0	2
Troy Mill Lake	13	8	7	3	4	8	0	1	0	0	2	6
Lea Valley:	500	362	303	185	224	156	330	278	330	351	376	391
Lea Valley:
East Hyde	12	10	25	6	10	10	15	7	11	10	7	10
Brocket Park	4	6	9	6	14	31	16	26	38	30	45	84
Stanborough Lakes North	94	54	73	38	74	nc	120	87	80	80	70	26
Stanborough Lakes South	19	22	16	22	38	nc	32	47	20	11	27	26
King's Meads	0	nc	nc	nc	5	nc	nc	1	5	0	nc	nc
Amwell GP - Ware / Thrift GP	12	2	0	2	nc	22	9	0	21	4	5	5
Amwell NR - others	47	6	10	13	7	17	30	13	24	17	10	14
Stanstead Innings	10	50	23	10	9	11	13	7	12	25	10	9
Rye Meads	76	25	30	nc	nc	nc	nc	nc	15	46	43	41
Broxbourne GP	19	16	10	7	3	5	16	10	8	21	31	28
Cheshunt GPs:	207	171	107	81	64	60	79	80	96	107	128	148
Cheshunt GPs:
Herts:	47	82	31	29	25	40	42	37	55	34	41	56
Herts:
Bowyers Water	12	17	6	15	7	11	25	22	18	9	11	14
Cheshunt Lake	2	8	1	0	5	6	0	2	0	0	0	16
North Met Pit	33	55	21	12	12	17	14	13	30	19	17	21
Slipe Lane Pits	0	2	1	2	0	3	0	0	0	4	0	0
Ashley Pit	0	0	2	0	1	3	3	0	7	2	13	5
ex-Herts:	101	66	75	52	39	20	37	43	16	55	46	76
ex-Herts:
Friday Lake	0	0	3	0	3	0	14	2	11	0	2	0
Hooks Marsh GP	8	19	11	15	5	2	2	21	5	22	12	18
Met Police Pit	0	0	9	3	1	2	4	3	0	11	0	2
Seventy Acres Lake	93	47	52	34	30	16	17	17	nc	22	32	56
Essex:	59	23	1	0	0	0	0	0	25	18	41	16
Essex:
Hall Marsh Scrape	11	5	1	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	48	18	nc	nc	nc	nc	nc	nc	25	18	41	16
Radwell Mill	24	10	20	nc	8	16	18	23	nc	27	24	20
Digswell Lake	0	0	nc	3	2	nc	13	9	20	nc	6	nc
Panshanger Park	19	nc	20	20	33	nc	28	nc	6	41	0	68
Fairlands Valley Park	63	68	25	28	27	62	96	82	88	59	60	62
Hatfield Park	0	6	nc	2	nc	nc	nc	nc	nc	nc	4	6
Verulamium Park	24	20	13	17	24	22	40	36	38	43	23	27
Tyttenhanger GPs - all	42	8	10	7	0	21	14	nc	nc	nc	nc	nc
Aldenham Reservoir	30	20	25	12	30	40	36	24	24	25	13	16
Hilfield Park Reservoir	25	nc	nc	nc	13	9	0	0	0	15	4	0
Tring Reservoirs	114	nc	67	54	141	180	293	345	159	67	68	77

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	32	60	17	1	5	0	4	1	19	55	55	73
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	6	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	26	31	15	1	0	0	0	0	17	48	43	63
Maple Lodge NR	0	0	2	0	5	0	4	1	2	7	11	nc
Lynsters Lake	0	0	nc	nc	0	0	0	0	0	0	0	10
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	1	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	29	0	0	0	0	0	0	0	0	0	0
Lea Valley:	467	242	163	5	4	2	1	5	103	247	112	418
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	0
Stanborough Lakes North	7	0	0	0	0	nc	0	0	0	0	1	2
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	13	nc	nc	nc	4	nc	nc	0	0	2	nc	nc
Amwell GP - Ware / Thrift GP	2	4	0	0	nc	0	0	0	0	7	9	6
Amwell NR - others	25	35	70	1	0	0	1	3	9	19	14	8
Stanstead Innings	2	2	3	0	0	0	0	0	2	6	7	2
Rye Meads	39	40	41	nc	nc	nc	nc	nc	75	62	15	19
Broxbourne GP	10	1	0	0	0	0	0	0	1	0	0	2
Cheshunt GPs:	369	160	49	4	0	2	0	2	16	151	66	379
Cheshunt GPs:
Herts:	34	52	29	0	0	0	0	0	6	18	18	10
Herts:
Bowyers Water	4	8	0	0	0	0	0	0	0	6	0	4
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	28	40	27	0	0	0	0	0	0	0	16	4
Slipe Lane Pits	0	2	0	0	0	0	0	0	0	0	0	0
Ashley Pit	2	2	2	0	0	0	0	0	6	12	2	2
ex-Herts:	332	68	20	4	0	2	0	2	2	125	20	354
ex-Herts:
Friday Lake	4	0	0	0	0	0	0	0	2	13	0	0
Hooks Marsh GP	0	36	3	2	0	0	0	2	0	26	18	127
Met Police Pit	0	0	0	0	0	0	0	0	0	70	2	221
Seventy Acres Lake	328	32	17	2	0	2	0	0	nc	16	0	6
Essex:	3	40	0	0	0	0	0	0	8	8	28	15
Essex:
Hall Marsh Scrape	0	2	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	3	38	nc	nc	nc	nc	nc	nc	8	8	28	15
Radwell Mill	0	0	0	nc	0	0	0	0	nc	3	5	5
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	9	nc	4	0	0	nc	0	nc	0	9	6	16
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	1	0	0
Tyttenhanger GPs - all	7	16	29	0	0	0	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	3	0	0	0	0	0	0	8	10	0
Hilfield Park Reservoir	163	nc	nc	nc	0	0	0	0	2	40	0	11
Tring Reservoirs	60	nc	22	9	0	6	8	1	14	45	74	44

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	126	76	71	29	18	16	7	18	37	51	52	57
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	2	4	8	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	66	31	31	9	10	5	0	18	37	47	16	20
Maple Lodge NR	0	10	21	19	8	11	7	0	0	0	3	nc
Lynsters Lake	24	10	nc	nc	0	0	0	0	0	3	27	30
Pynesfield North/South Lakes	34	21	11	1	0	0	0	0	0	1	6	6
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:	195	99	85	42	36	34	36	72	98	93	159	114
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	0
Stanborough Lakes North	0	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	0	nc	nc	nc	6	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	15	6	3	12	nc	1	2	4	1	4	14	17
Amwell NR - others	36	17	20	10	15	20	23	61	73	39	30	21
Stanstead Innings	29	23	19	13	8	0	6	0	22	18	32	21
Rye Meads	3	2	13	nc	nc	nc	nc	nc	0	1	2	5
Broxbourne GP	32	7	9	0	0	0	0	0	0	3	4	3
Cheshunt GPs:	80	44	21	7	7	13	5	7	2	28	77	47
Cheshunt GPs:
Herts:	24	3	6	0	0	0	3	0	0	2	21	10
Herts:
Bowyers Water	19	3	4	0	0	0	3	0	0	2	20	10
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	5	0	2	0	0	0	0	0	0	0	1	0
Slipe Lane Pits	0	0	0	0	0	0	0	0	0	0	0	0
Ashley Pit	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	13	13	15	7	7	13	2	7	0	13	28	5
ex-Herts:
Friday Lake	0	0	0	0	0	0	0	0	0	0	0	1
Hooks Marsh GP	0	1	1	1	4	0	0	2	0	0	2	2
Met Police Pit	0	10	7	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	13	2	7	6	3	13	2	5	nc	13	26	2
Essex:	43	28	0	0	0	0	0	0	2	13	28	32
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	43	28	nc	nc	nc	nc	nc	nc	2	13	28	32
Radwell Mill	0	0	0	nc	0	0	0	0	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	44	nc	10	0	0	nc	9	nc	11	7	16	9
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	3	0	0	0	11	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	6	0	0	0	0	0	5	0	0	0	0
Hilfield Park Reservoir	27	nc	nc	nc	0	17	58	53	2	0	1	4
Tring Reservoirs	308	nc	89	4	0	16	12	21	66	254	236	288

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	257	284	164	121	128	80	39	22	126	113	238	316
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	2	13	5	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	68	86	61	80	63	33	24	14	68	40	39	153
Maple Lodge NR	5	6	9	19	22	0	15	4	10	1	6	nc
Lynsters Lake	36	27	nc	nc	14	3	0	0	41	35	82	44
Pynesfield North/South Lakes	102	67	46	15	9	6	0	0	0	21	60	72
Helicon Lake	9	8	1	7	12	10	0	0	0	0	0	0
Troy Mill Lake	35	77	42	0	8	28	0	4	7	16	51	47
Lea Valley:	500	639	441	282	193	226	275	234	286	386	611	609
Lea Valley:
East Hyde	0	0	0	2	1	0	0	0	0	0	0	0
Brocket Park	1	2	4	4	8	10	6	4	3	0	0	6
Stanborough Lakes North	7	17	20	16	9	nc	7	5	0	4	8	2
Stanborough Lakes South	0	0	1	0	0	nc	0	0	0	0	0	0
King's Meads	0	nc	nc	nc	25	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	12	30	27	42	nc	46	35	21	18	23	27	19
Amwell NR - others	78	109	100	40	10	25	36	78	47	49	66	42
Stanstead Innings	83	81	46	29	25	34	39	44	64	98	81	79
Rye Meads	32	41	63	nc	nc	nc	nc	nc	21	37	29	36
Broxbourne GP	43	84	36	40	8	20	70	35	56	44	41	74
Cheshunt GPs:	244	275	144	109	107	91	82	47	77	131	359	351
Cheshunt GPs:
Herts:	37	68	37	60	15	35	34	7	11	47	34	51
Herts:
Bowyers Water	24	17	11	12	5	18	13	1	5	12	11	34
Cheshunt Lake	0	0	0	0	0	0	0	1	0	0	0	0
North Met Pit	13	16	7	35	6	9	20	5	5	19	17	4
Slipe Lane Pits	0	28	5	1	0	7	1	0	0	0	0	6
Ashley Pit	0	7	14	12	4	1	0	0	1	16	6	7
ex-Herts:	38	75	95	49	92	56	48	40	14	26	67	63
ex-Herts:
Friday Lake	0	6	12	3	35	14	0	0	5	1	14	13
Hooks Marsh GP	15	32	18	15	8	6	23	10	9	1	26	18
Met Police Pit	0	6	15	10	21	0	0	0	0	2	4	0
Seventy Acres Lake	23	31	50	21	28	36	25	30	nc	22	23	32
Essex:	169	132	12	0	0	0	0	0	52	58	258	237
Essex:
Hall Marsh Scrape	11	8	12	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	158	124	nc	nc	nc	nc	nc	nc	52	58	258	237
Radwell Mill	0	0	3	nc	6	2	0	0	nc	1	0	0
Digswell Lake	3	0	nc	2	0	nc	0	3	3	nc	1	nc
Panshanger Park	56	nc	57	31	58	nc	54	nc	44	48	52	42
Fairlands Valley Park	0	0	0	2	0	2	0	0	0	1	1	1
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	6	0
Verulamium Park	0	0	0	7	2	2	0	0	0	0	0	0
Tyttenhanger GPs - all	25	10	27	10	0	6	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	6	0	0	0	2	0	0	0	0	0
Hilfield Park Reservoir	91	nc	nc	nc	20	45	137	156	49	70	0	61
Tring Reservoirs	271	nc	247	166	22	27	75	138	136	244	311	262

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	4	3	6	0	0	0	0	0	0	0	0	5
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	4	2	6	0	0	0	0	0	0	0	0	5
Maple Lodge NR	0	0	0	0	0	0	0	0	0	0	0	nc
Lynsters Lake	0	0	nc	nc	0	0	0	0	0	0	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	1	0	0	0	0	0	0	0	0	0	0
Lea Valley:	3	6	2	0	0	0	0	0	0	0	0	2
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	0
Stanborough Lakes North	0	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	0	nc	nc	nc	0	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	0	0	0
Amwell NR - others	1	2	2	0	0	0	0	0	0	0	0	0
Stanstead Innings	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:	2	4	0	0	0	0	0	0	0	0	0	2
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	0	0	1
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	0	0	0	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	0	0	0	0	0	0	0	0	0	0	0	0
Slipe Lane Pits	0	0	0	0	0	0	0	0	0	0	0	0
Ashley Pit	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	nc	0	0	0
Essex:	2	4	0	0	0	0	0	0	0	0	0	1
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	2	4	nc	nc	nc	nc	nc	nc	0	0	0	1
Radwell Mill	0	0	0	nc	0	0	0	0	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	0	nc	0	0	0	nc	0	nc	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	0	0	0	0	0	0	0	0	0	0
Hilfield Park Reservoir	0	nc	nc	nc	0	0	0	0	0	0	0	0
Tring Reservoirs	8	nc	4	0	0	0	0	0	0	0	3	6

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	2	4	10	7	6	8	7	4	7	1	4	3
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	2	4	10	7	6	8	7	4	7	1	4	nc
Lynsters Lake	0	0	nc	nc	0	0	0	0	0	0	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	3
Lea Valley:	33	15	10	4	4	3	2	4	29	28	34	26
Lea Valley:
East Hyde	3	2	2	2	2	2	0	1	2	0	1	2
Brocket Park	0	1	0	0	0	1	1	1	1	2	1	3
Stanborough Lakes North	1	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	0	0	0	0	0	nc	0	0	0	0	0	0
King's Meads	1	nc	nc	nc	2	nc	nc	1	0	0	nc	nc
Amwell GP - Ware / Thrift GP	0	1	0	0	nc	0	0	0	0	0	4	1
Amwell NR - others	9	2	3	1	0	0	0	0	1	4	17	8
Stanstead Innings	1	0	1	1	0	0	0	0	0	0	0	2
Rye Meads	6	8	0	nc	nc	nc	nc	nc	20	17	6	2
Broxbourne GP	2	0	1	0	0	0	0	0	0	0	0	3
Cheshunt GPs:	10	1	3	0	0	0	1	1	5	5	5	5
Cheshunt GPs:
Herts:	1	0	2	0	0	0	1	1	5	1	0	1
Herts:
Bowyers Water	0	0	0	0	0	0	1	0	2	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	1	0	0	0	0	0	0	0	0	0	0	1
Slipe Lane Pits	0	0	0	0	0	0	0	0	0	0	0	0
Ashley Pit	0	0	2	0	0	0	0	1	3	1	0	0
ex-Herts:	3	0	1	0	0	0	0	0	0	2	3	1
ex-Herts:
Friday Lake	1	0	0	0	0	0	0	0	0	0	0	0
Hooks Marsh GP	1	0	0	0	0	0	0	0	0	1	0	0
Met Police Pit	0	0	0	0	0	0	0	0	0	0	0	0
Seventy Acres Lake	1	0	1	0	0	0	0	0	nc	1	3	1
Essex:	6	1	0	0	0	0	0	0	0	2	2	3
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	6	1	nc	nc	nc	nc	nc	nc	0	2	2	3
Radwell Mill	1	1	1	nc	0	0	0	1	nc	1	1	0
Digswell Lake	0	0	nc	2	1	nc	1	2	2	nc	1	nc
Panshanger Park	29	nc	29	12	14	nc	15	nc	27	29	22	23
Fairlands Valley Park	0	0	2	2	2	1	2	0	1	2	1	1
Hatfield Park	0	1	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	1	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	nc	nc	nc	nc	nc
Aldenham Reservoir	0	1	1	0	0	0	0	0	1	0	1	1
Hilfield Park Reservoir	2	nc	nc	nc	8	3	6	2	12	12	0	4
Tring Reservoirs	10	nc	3	2	3	6	4	9	20	16	16	21

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	52	37	37	25	41	31	39	38	48	39	43	40
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	7	7	8	nc	nc	nc	nc	nc	8	nc	nc	nc
Stocker's and Bury Lakes	16	10	16	15	22	12	18	17	23	23	20	17
Maple Lodge NR	0	0	0	0	1	0	2	2	1	0	0	nc
Lynsters Lake	14	6	nc	nc	4	2	1	4	0	1	2	2
Pynesfield North/South Lakes	5	6	7	5	6	5	9	6	10	9	7	9
Helicon Lake	2	1	2	1	2	2	0	4	1	1	3	1
Troy Mill Lake	8	7	4	4	6	10	9	5	5	5	11	11
Lea Valley:	68	52	53	56	43	49	65	75	107	106	113	79
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	2	2	2	3	1	1	1	2	0	0
Stanborough Lakes North	0	0	0	0	0	nc	0	0	0	0	0	0
Stanborough Lakes South	2	3	6	6	2	nc	3	4	3	6	10	4
King's Meads	0	nc	nc	nc	0	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	2	4	4	4	nc	7	6	10	8	3	5	7
Amwell NR - others	8	9	2	6	3	7	13	8	8	8	12	9
Stanstead Innings	4	4	6	3	5	4	4	13	6	5	3	3
Rye Meads	0	0	0	nc	nc	nc	nc	nc	3	0	1	0
Broxbourne GP	4	3	8	8	9	8	7	8	25	21	9	5
Cheshunt GPs:	48	29	25	27	22	20	31	31	53	61	73	51
Cheshunt GPs:
Herts:	4	2	7	10	9	10	12	18	28	15	10	5
Herts:
Bowyers Water	0	1	4	3	5	5	8	12	12	8	4	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	3	0	1	5	4	1	2	4	13	5	5	3
Slipe Lane Pits	0	0	0	0	0	2	0	0	2	0	0	0
Ashley Pit	1	1	2	2	0	2	2	2	1	2	1	1
ex-Herts:	18	14	18	17	13	10	19	13	3	14	9	10
ex-Herts:
Friday Lake	2	1	1	2	2	0	2	1	2	2	0	0
Hooks Marsh GP	1	3	7	6	2	3	2	5	1	4	3	3
Met Police Pit	1	1	0	0	2	1	0	0	0	0	0	0
Seventy Acres Lake	14	9	10	9	7	6	15	7	nc	8	6	7
Essex:	26	13	0	0	0	0	0	0	22	32	54	36
Essex:
Hall Marsh Scrape	0	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	26	13	nc	nc	nc	nc	nc	nc	22	32	54	36
Radwell Mill	0	0	0	nc	0	0	0	0	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	0	nc	0	2	3	nc	1	nc	2	1	0	0
Fairlands Valley Park	0	2	5	6	2	0	0	0	0	2	5	5
Hatfield Park	0	0	nc	0	nc	nc	nc	nc	nc	nc	0	0
Verulamium Park	1	1	0	2	0	2	0	0	1	0	0	0
Tyttenhanger GPs - all	4	19	16	12	0	9	2	nc	nc	nc	nc	nc
Aldenham Reservoir	0	9	6	12	1	4	6	4	5	12	3	3
Hilfield Park Reservoir	15	nc	nc	nc	10	33	41	54	41	18	19	4
Tring Reservoirs	24	nc	13	15	16	11	14	15	20	27	32	44

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	33	41	26	10	11	12	17	23	18	44	37	61
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	1	2	2	nc	nc	nc	nc	nc	0	nc	nc	nc
Stocker's and Bury Lakes	11	13	12	5	10	9	8	11	0	37	30	25
Maple Lodge NR	0	1	2	1	1	0	2	1	0	0	1	nc
Lynsters Lake	3	2	nc	nc	0	0	0	3	0	0	1	5
Pynesfield North/South Lakes	4	5	5	2	0	0	1	1	0	0	0	6
Helicon Lake	0	0	0	1	0	0	0	0	0	0	0	0
Troy Mill Lake	14	18	5	1	0	3	6	7	18	7	5	25
Lea Valley:	130	94	72	49	47	45	40	56	104	215	171	150
Lea Valley:
East Hyde	8	2	6	1	3	1	1	1	3	8	1	2
Brocket Park	1	3	1	0	1	1	0	0	0	1	1	3
Stanborough Lakes North	5	3	1	0	0	nc	0	0	0	0	5	4
Stanborough Lakes South	0	0	0	1	0	nc	0	0	0	1	0	5
King's Meads	0	nc	nc	nc	1	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	8	2	0	2	nc	2	0	0	0	0	3	5
Amwell NR - others	24	19	45	34	32	30	22	14	27	44	20	31
Stanstead Innings	6	10	5	1	4	1	3	3	7	6	8	9
Rye Meads	6	2	0	nc	nc	nc	nc	nc	24	21	8	7
Broxbourne GP	9	7	1	0	0	1	1	2	7	1	8	19
Cheshunt GPs:	63	46	13	10	6	9	13	36	36	133	117	65
Cheshunt GPs:
Herts:	7	9	2	1	1	2	5	15	25	19	28	9
Herts:
Bowyers Water	0	0	1	0	1	0	3	12	25	6	1	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
North Met Pit	3	5	0	0	0	1	2	3	0	10	24	2
Slipe Lane Pits	0	1	0	0	0	0	0	0	0	0	1	3
Ashley Pit	4	3	1	1	0	1	0	0	0	3	2	4
ex-Herts:	27	20	11	9	5	7	8	21	4	90	27	24
ex-Herts:
Friday Lake	0	0	0	1	0	0	0	0	0	0	0	2
Hooks Marsh GP	18	18	4	3	1	2	2	8	4	44	9	4
Met Police Pit	0	0	3	2	0	0	2	0	0	0	1	0
Seventy Acres Lake	9	2	4	3	4	5	4	13	nc	46	17	18
Essex:	29	17	0	0	0	0	0	0	7	24	62	32
Essex:
Hall Marsh Scrape	4	0	0	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	25	17	nc	nc	nc	nc	nc	nc	7	24	62	32
Radwell Mill	0	0	0	nc	0	0	0	1	nc	0	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	7	nc	0	4	7	nc	0	nc	4	6	7	6
Fairlands Valley Park	0	10	2	2	0	1	3	2	0	10	17	13
Hatfield Park	0	2	nc	2	nc	nc	nc	nc	nc	nc	0	2
Verulamium Park	1	0	0	0	0	0	0	0	0	0	2	0
Tyttenhanger GPs - all	34	38	30	7	0	1	2	nc	nc	nc	nc	nc
Aldenham Reservoir	0	0	9	1	0	0	0	2	6	15	0	0
Hilfield Park Reservoir	0	nc	nc	nc	0	0	19	39	18	16	8	6
Tring Reservoirs	52	nc	46	40	42	7	32	18	42	96	76	97

Grey HeronTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	22	17	16	18	7	12	10	7	12	11	7	11
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	0	1	0	nc	nc	nc	nc	nc	1	nc	nc	nc
Stocker's and Bury Lakes	12	10	12	15	6	9	7	2	5	6	2	6
Maple Lodge NR	1	2	2	2	0	2	1	1	3	1	0	nc
Lynsters Lake	2	3	nc	nc	1	0	0	0	1	1	3	4
Pynesfield North/South Lakes	4	0	1	0	0	0	1	0	0	1	0	0
Helicon Lake	0	0	0	0	0	0	0	1	0	0	0	0
Troy Mill Lake	3	1	1	1	0	1	1	3	2	2	2	1
Lea Valley:	30	42	23	34	19	22	23	27	24	47	28	40
Lea Valley:
East Hyde	1	1	0	4	1	2	1	0	0	0	0	1
Brocket Park	1	0	0	2	4	1	1	1	0	1	0	1
Stanborough Lakes North	0	0	0	2	2	nc	2	0	1	0	0	0
Stanborough Lakes South	1	0	1	2	0	nc	0	1	0	0	1	1
King's Meads	0	nc	nc	nc	0	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	1	1	0	8	nc	3	1	0	0	1	0	2
Amwell NR - others	6	17	17	5	8	11	5	11	6	2	6	3
Stanstead Innings	0	0	1	0	0	0	3	1	2	0	1	2
Rye Meads	2	3	0	nc	nc	nc	nc	nc	4	14	5	3
Broxbourne GP	0	2	1	2	0	1	0	2	0	0	2	4
Cheshunt GPs:	18	18	3	9	4	4	10	11	11	29	13	23
Cheshunt GPs:
Herts:	1	0	0	3	4	3	4	6	7	6	6	6
Herts:
Bowyers Water	0	0	0	0	2	0	3	3	3	4	3	0
Cheshunt Lake	1	0	0	1	0	2	0	1	0	0	0	0
North Met Pit	0	0	0	0	1	1	0	1	3	1	2	2
Slipe Lane Pits	0	0	0	0	0	0	1	0	0	0	0	1
Ashley Pit	0	0	0	2	1	0	0	1	1	1	1	3
ex-Herts:	11	7	2	6	0	1	6	5	2	18	4	11
ex-Herts:
Friday Lake	2	0	0	2	0	0	0	1	0	0	0	0
Hooks Marsh GP	0	6	1	2	0	1	0	1	0	8	3	1
Met Police Pit	3	0	0	1	0	0	5	1	2	2	0	1
Seventy Acres Lake	6	1	1	1	0	0	1	2	nc	8	1	9
Essex:	6	11	1	0	0	0	0	0	2	5	3	6
Essex:
Hall Marsh Scrape	1	0	1	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	5	11	nc	nc	nc	nc	nc	nc	2	5	3	6
Radwell Mill	1	0	1	nc	0	2	1	1	nc	1	0	0
Digswell Lake	0	0	nc	0	0	nc	0	0	0	nc	0	nc
Panshanger Park	1	nc	2	0	1	nc	0	nc	0	2	2	0
Fairlands Valley Park	0	1	1	2	2	1	0	1	0	1	1	1
Hatfield Park	0	1	nc	1	nc	nc	nc	nc	nc	nc	1	0
Verulamium Park	0	2	2	2	4	0	0	1	0	2	0	2
Tyttenhanger GPs - all	5	10	7	8	0	4	4	nc	nc	nc	nc	nc
Aldenham Reservoir	1	2	2	1	0	0	3	2	1	3	1	2
Hilfield Park Reservoir	0	nc	nc	nc	1	2	1	1	2	1	0	0
Tring Reservoirs	11	nc	6	10	3	11	12	5	5	9	5	12

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	30	37	40	24	33	26	25	26	31	35	43	13
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	3	9	5	nc	nc	nc	nc	nc	2	nc	nc	nc
Stocker's and Bury Lakes	12	13	12	11	12	5	5	13	13	16	17	10
Maple Lodge NR	12	11	17	12	19	15	17	6	10	15	21	nc
Lynsters Lake	0	0	nc	nc	0	0	0	1	0	0	0	1
Pynesfield North/South Lakes	0	0	2	0	1	0	0	1	0	3	2	1
Helicon Lake	0	2	3	1	1	3	0	2	4	1	2	0
Troy Mill Lake	3	2	1	0	0	3	3	3	2	0	1	1
Lea Valley:	198	140	120	62	38	22	68	84	151	173	163	158
Lea Valley:
East Hyde	56	17	19	15	15	7	17	17	10	11	9	33
Brocket Park	8	10	2	2	2	1	0	3	3	5	13	14
Stanborough Lakes North	3	7	8	1	4	nc	3	4	6	10	13	8
Stanborough Lakes South	4	4	1	1	2	nc	2	0	1	3	3	2
King's Meads	0	nc	nc	nc	0	nc	nc	12	6	7	nc	nc
Amwell GP - Ware / Thrift GP	1	11	1	2	nc	1	3	4	3	4	2	2
Amwell NR - others	14	6	2	7	4	4	11	17	19	15	14	7
Stanstead Innings	2	9	6	6	1	1	5	9	6	8	8	3
Rye Meads	41	15	31	nc	nc	nc	nc	nc	53	67	36	34
Broxbourne GP	9	6	1	3	2	2	6	1	9	14	6	7
Cheshunt GPs:	60	55	49	25	8	6	21	17	35	29	59	48
Cheshunt GPs:
Herts:	13	28	27	8	3	5	13	10	19	8	21	14
Herts:
Bowyers Water	6	2	3	3	0	0	2	2	4	1	1	2
Cheshunt Lake	1	0	9	1	0	1	3	3	0	2	2	0
North Met Pit	5	18	11	1	1	4	3	4	10	4	13	7
Slipe Lane Pits	1	2	1	1	0	0	2	0	1	0	4	3
Ashley Pit	0	6	3	2	2	0	3	1	4	1	1	2
ex-Herts:	32	18	17	17	5	1	8	7	4	18	22	24
ex-Herts:
Friday Lake	0	1	3	0	0	0	0	1	1	0	2	0
Hooks Marsh GP	2	2	0	2	1	1	0	2	2	6	4	14
Met Police Pit	0	2	3	2	0	0	0	0	1	1	1	1
Seventy Acres Lake	30	13	11	13	4	0	8	4	nc	11	15	9
Essex:	15	9	5	0	0	0	0	0	12	3	16	10
Essex:
Hall Marsh Scrape	12	4	5	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	3	5	nc	nc	nc	nc	nc	nc	12	3	16	10
Radwell Mill	9	8	6	nc	2	1	4	4	nc	6	7	9
Digswell Lake	3	2	nc	1	1	nc	3	4	6	nc	3	nc
Panshanger Park	4	nc	17	6	2	nc	8	nc	19	18	8	5
Fairlands Valley Park	17	11	17	14	11	10	5	7	14	13	18	23
Hatfield Park	2	0	nc	0	nc	nc	nc	nc	nc	nc	1	3
Verulamium Park	12	7	5	3	1	2	3	2	5	13	9	16
Tyttenhanger GPs - all	34	40	20	5	0	2	9	nc	nc	nc	nc	nc
Aldenham Reservoir	2	0	0	3	1	1	4	2	6	5	2	1
Hilfield Park Reservoir	0	nc	nc	nc	0	0	0	3	0	0	0	0
Tring Reservoirs	13	nc	15	9	7	10	15	15	26	44	23	29

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	668	603	309	186	155	165	231	331	460	603	827	979
Colne Valley:
Hampermill Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Batchworth Lake	46	22	17	nc	nc	nc	nc	nc	37	nc	nc	nc
Stocker's and Bury Lakes	169	186	91	50	50	46	42	119	97	147	153	167
Maple Lodge NR	9	35	38	39	21	33	36	21	18	14	5	nc
Lynsters Lake	24	44	nc	nc	15	10	10	18	15	16	19	101
Pynesfield North/South Lakes	164	155	73	43	32	38	68	47	67	81	129	168
Helicon Lake	89	53	46	10	14	13	14	15	74	74	105	83
Troy Mill Lake	167	108	44	44	23	25	61	111	152	271	416	460
Lea Valley:	1886	980	648	440	313	392	564	660	1444	1620	1957	1967
Lea Valley:
East Hyde	5	3	14	10	10	11	5	7	11	18	12	12
Brocket Park	17	11	17	9	8	12	5	12	17	20	20	19
Stanborough Lakes North	55	24	0	20	24	nc	42	56	50	40	36	45
Stanborough Lakes South	12	9	8	6	2	nc	3	4	9	16	18	17
King's Meads	25	nc	nc	nc	10	nc	nc	0	0	0	nc	nc
Amwell GP - Ware / Thrift GP	11	10	6	22	nc	17	26	26	6	8	17	3
Amwell NR - others	436	131	94	50	44	66	145	181	284	356	352	365
Stanstead Innings	127	82	56	62	27	35	21	58	57	81	91	87
Rye Meads	117	97	112	nc	nc	nc	nc	nc	309	166	135	81
Broxbourne GP	161	130	107	70	61	63	42	77	104	138	149	140
Cheshunt GPs:	920	483	234	191	127	188	275	239	597	777	1127	1198
Cheshunt GPs:
Herts:	198	174	148	119	67	112	109	71	115	124	204	211
Herts:
Bowyers Water	103	19	30	27	34	59	50	32	55	69	101	119
Cheshunt Lake	4	9	4	8	2	14	15	4	1	3	2	4
North Met Pit	34	20	21	15	8	10	21	12	11	11	12	6
Slipe Lane Pits	10	29	12	14	6	19	8	6	14	5	13	7
Ashley Pit	47	97	81	55	17	10	15	17	34	36	76	75
ex-Herts:	156	93	82	72	60	76	166	168	12	83	111	105
ex-Herts:
Friday Lake	6	0	3	9	2	1	2	4	5	2	4	2
Hooks Marsh GP	11	28	24	8	8	14	26	28	6	28	32	26
Met Police Pit	27	9	7	6	0	1	2	0	1	0	1	3
Seventy Acres Lake	112	56	48	49	50	60	136	136	nc	53	74	74
Essex:	566	216	4	0	0	0	0	0	470	570	812	882
Essex:
Hall Marsh Scrape	4	4	4	nc	nc	nc	nc	nc	nc	nc	nc	nc
Holyfield Marsh Lake	562	212	nc	nc	nc	nc	nc	nc	470	570	812	882
Radwell Mill	1	2	3	nc	3	5	3	3	nc	2	1	1
Digswell Lake	2	2	nc	3	5	nc	4	2	1	nc	2	nc
Panshanger Park	155	nc	71	48	59	nc	76	nc	170	151	137	162
Fairlands Valley Park	18	12	12	13	13	11	13	22	20	16	18	18
Hatfield Park	5	2	nc	0	nc	nc	nc	nc	nc	nc	1	3
Verulamium Park	29	17	20	17	9	15	27	21	14	27	38	27
Tyttenhanger GPs - all	88	42	46	28	0	50	19	nc	nc	nc	nc	nc
Aldenham Reservoir	7	6	13	10	9	11	15	50	2	7	10	11
Hilfield Park Reservoir	28	nc	nc	nc	61	97	145	157	182	43	62	58
Tring Reservoirs	320	nc	135	100	145	214	334	401	533	462	439	551