Herts Bird Club - WeBS 2009

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

In 2009 the Hertfordshire counts were organised by Cath Patrick (Lee Valley from Ware GP south) and Jim Terry (all other sites), and undertaken by dedicated observers each month. Some sites are not counted during the summer months (April to August) but otherwise coverage is very good. During the winter months (September to March) 96% of planned counts were completed.

The Sunday count dates in 2009 were; 18 Jan, 22 Feb, 15 Mar, 19 Apr, 10 May, 14 Jun, 12 Jul, 23 Aug, 20 Sep, 11 Oct, 22 Nov, and 20 Dec. With agreement from the scheme organisers, the Lee Valley counts continue to be undertaken on the previous Saturday.

Thanks are due to everyone who contributes to this important monitoring scheme, and to Jim Terry, and Cath Patrick for their co-ordination.

We are always looking for new volunteers to help with this national monitoring effort, not only to fill existing gaps in coverage, but also to take on other sites, that may hold significant numbers of wetland birds. The effort involves counting all water-birds at one wetland site once a month on the designated Saturday or Sunday – ideally throughout the year, but most importantly from January to March and September to December. 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 can help.

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:	96	93	51	82	83	79	95	91	85	82	88	59
Colne Valley:
Hampermill Lake	2	0	2	5	2	2	5	nc	2	nc	nc	1
Batchworth Lake	38	39	nc	23	29	28	32	34	17	8	8	4
Stocker's and Bury Lakes	44	39	40	43	36	38	51	47	44	58	65	35
Maple Lodge	0	2	2	3	4	3	2	2	0	0	0	0
Lynsters Lake	1	0	0	2	2	0	0	2	5	2	2	0
Pynesfield North/South Lakes	8	8	3	4	6	6	3	4	8	5	8	5
Helicon Lake	1	3	2	0	2	0	0	2	0	1	0	6
Troy Mill Lake	2	2	2	2	2	2	2	0	9	8	5	8
Lea Valley:	162	126	84	36	80	44	63	69	79	110	160	160
Lea Valley:
East Hyde	2	3	2	2	2	2	2	2	4	4	4	7
King's Meads	2	4	5	2	nc	nc	3	0	0	3	5	4
Amwell GP - Ware / Thrift GP	3	13	5	3	2	nc	8	nc	4	nc	10	2
Amwell NR - others	20	17	6	4	6	13	10	18	9	8	15	10
Stanstead Abbotts Lakes - N lake	16	4	2	nc	nc	nc	nc	nc	7	26	16	17
Rye Meads	8	6	6	nc	nc	nc	nc	nc	12	20	19	18
Broxbourne GP	4	0	1	nc	nc	nc	nc	nc	nc	0	5	nc
Cheshunt GPs:	107	79	57	25	70	29	40	49	43	49	86	102
Cheshunt GPs:
Herts:	29	16	38	14	22	22	37	43	28	46	40	42
Herts:
Bowyers Water	16	10	22	8	19	16	33	37	18	31	34	30
Cheshunt Lake	2	0	9	2	2	2	2	2	0	10	0	2
Northmet Lake	6	4	5	2	0	3	2	2	8	1	2	8
Slipe Lane Lake	3	2	2	1	1	1	0	2	2	0	0	0
Turnford Lakes	2	0	0	1	0	0	0	0	0	4	4	2
ex-Herts:	67	61	11	5	44	7	3	4	0	3	38	59
ex-Herts:
Friday Lake	2	nc	1	0	0	2	0	nc	nc	nc	8	16
Hooks Marsh GP	23	13	7	4	3	2	1	4	nc	3	2	4
Met Police Pit	0	nc	3	1	0	3	2	nc	nc	nc	0	0
Seventy Acres Lake	42	48	nc	nc	41	nc	nc	nc	nc	nc	28	39
Essex:	11	2	8	6	4	0	0	2	15	0	8	1
Essex:
Hall Marsh Scrape	3	2	1	5	4	0	0	2	nc	0	2	1
Holyfield Marsh Lake	8	nc	7	1	nc	0	nc	0	15	nc	6	nc
Brocket Park	6	0	1	0	1	2	0	0	2	7	2	2
Panshanger Park	14	20	4	8	6	2	0	3	4	5	4	5
Fairlands Valley Park	0	4	0	0	1	0	0	0	0	0	0	2
Tyttenhanger GPs - all	4	2	3	2	1	2	6	5	12	11	8	4
Aldenham Reservoir	15	nc	2	2	2	2	nc	8	4	9	nc	nc
Hilfield Park Reservoir	16	6	7	3	3	4	4	4	2	4	3	3
Tring Reservoirs	32	17	14	0	24	47	65	65	32	29	52	23

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	310	235	214	199	105	121	171	148	149	86	27	74
Colne Valley:
Hampermill Lake	153	48	37	52	10	38	44	nc	0	nc	nc	0
Batchworth Lake	18	18	nc	17	9	5	1	11	19	2	2	2
Stocker's and Bury Lakes	121	121	128	105	76	78	123	112	127	74	20	70
Maple Lodge	0	3	4	4	4	0	0	4	0	0	0	0
Lynsters Lake	18	37	45	21	6	0	0	14	2	0	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	5	0	0	0	0
Helicon Lake	0	6	0	0	0	0	3	2	1	10	5	0
Troy Mill Lake	0	2	0	0	0	0	0	0	0	0	0	2
Lea Valley:	195	317	309	275	209	403	508	397	143	235	219	348
Lea Valley:
East Hyde	32	31	18	16	22	14	48	88	42	112	35	35
King's Meads	0	0	10	2	nc	nc	1	0	0	0	4	0
Amwell GP - Ware / Thrift GP	0	0	8	19	9	nc	16	nc	0	nc	0	6
Amwell NR - others	72	117	103	86	70	89	218	150	9	8	94	176
Stanstead Abbotts Lakes - N lake	4	6	35	nc	nc	nc	nc	nc	10	5	0	7
Rye Meads	0	21	7	nc	nc	nc	nc	nc	0	0	3	1
Broxbourne GP	8	22	31	nc	nc	nc	nc	nc	nc	21	2	nc
Cheshunt GPs:	79	120	97	152	108	300	225	159	82	89	81	123
Cheshunt GPs:
Herts:	42	78	66	85	53	156	166	114	40	34	40	95
Herts:
Bowyers Water	10	7	6	20	21	36	59	72	7	15	9	2
Cheshunt Lake	23	10	18	17	9	13	48	4	1	8	28	26
Northmet Lake	9	50	20	30	19	107	59	24	13	10	3	59
Slipe Lane Lake	0	5	13	10	2	0	0	9	17	0	0	4
Turnford Lakes	0	6	9	8	2	0	0	5	2	1	0	4
ex-Herts:	31	37	25	52	51	88	59	3	0	34	31	28
ex-Herts:
Friday Lake	0	nc	0	0	2	0	21	nc	nc	nc	0	0
Hooks Marsh GP	15	17	19	13	26	61	30	3	nc	34	11	13
Met Police Pit	0	nc	6	39	5	27	8	nc	nc	nc	0	2
Seventy Acres Lake	16	20	nc	nc	18	nc	nc	nc	nc	nc	20	13
Essex:	6	5	6	15	4	56	0	42	42	21	10	0
Essex:
Hall Marsh Scrape	3	5	4	4	4	0	0	29	nc	21	6	0
Holyfield Marsh Lake	3	nc	2	11	nc	56	nc	13	42	nc	4	nc
Brocket Park	50	22	49	10	5	0	0	80	0	0	11	73
Panshanger Park	2	77	39	38	44	45	95	108	5	21	5	120
Fairlands Valley Park	41	84	60	72	37	88	115	27	152	220	74	143
Tyttenhanger GPs - all	66	0	11	18	24	45	48	153	55	11	25	0
Aldenham Reservoir	38	nc	31	31	16	58	nc	59	33	47	nc	nc
Hilfield Park Reservoir	13	4	6	3	4	73	114	0	0	31	0	42
Tring Reservoirs	38	12	1	12	29	14	52	116	28	4	0	0

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	52	34	22	0	0	0	0	0	51	12	44	47
Colne Valley:
Hampermill Lake	3	0	0	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	1	0	nc	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	32	16	0	0	0	0	0	0	35	8	44	20
Maple Lodge	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	17	22	0	0	0	0	0	0	0	0	0
Pynesfield North/South Lakes	16	1	0	0	0	0	0	0	1	3	0	26
Helicon Lake	0	0	0	0	0	0	0	0	0	1	0	1
Troy Mill Lake	0	0	0	0	0	0	0	0	15	0	0	0
Lea Valley:	121	48	76	1	0	0	0	0	40	140	163	109
Lea Valley:
East Hyde	3	2	4	0	0	0	0	0	0	0	0	0
King's Meads	46	31	56	1	nc	nc	0	0	0	0	18	17
Amwell GP - Ware / Thrift GP	0	0	0	0	0	nc	0	nc	0	nc	0	0
Amwell NR - others	39	1	0	0	0	0	0	0	14	19	6	21
Stanstead Abbotts Lakes - N lake	0	0	0	nc	nc	nc	nc	nc	0	6	0	7
Rye Meads	0	0	3	nc	nc	nc	nc	nc	3	0	0	0
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	33	14	13	0	0	0	0	0	23	115	139	64
Cheshunt GPs:
Herts:	26	0	10	0	0	0	0	0	23	115	118	38
Herts:
Bowyers Water	26	0	10	0	0	0	0	0	22	115	117	38
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	0	0	0	0	0	0	1	0	1	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	26
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	26
Hooks Marsh GP	0	0	0	0	0	0	0	0	nc	0	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Seventy Acres Lake	0	0	nc	nc	0	nc	nc	nc	nc	nc	0	0
Essex:	7	14	3	0	0	0	0	0	0	0	21	0
Essex:
Hall Marsh Scrape	7	14	3	0	0	0	0	0	nc	0	9	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	0	nc	12	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	0	25	0	1	3	0	2
Aldenham Reservoir	0	nc	0	0	0	0	nc	0	4	2	nc	nc
Hilfield Park Reservoir	70	2	0	0	0	0	0	0	30	66	58	121
Tring Reservoirs	664	119	85	5	1	2	1	1	65	75	368	276

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	239	130	40	20	19	28	55	47	25	37	99	144
Colne Valley:
Hampermill Lake	2	0	0	2	0	0	1	nc	0	nc	nc	0
Batchworth Lake	11	2	nc	0	0	0	0	0	7	0	0	2
Stocker's and Bury Lakes	44	48	9	0	0	0	0	37	9	18	78	93
Maple Lodge	0	18	21	15	17	21	54	6	3	1	0	0
Lynsters Lake	20	2	7	0	2	0	0	0	4	6	1	0
Pynesfield North/South Lakes	143	34	0	1	0	0	0	0	0	8	15	12
Helicon Lake	19	26	0	0	0	0	0	0	0	0	2	30
Troy Mill Lake	0	0	3	2	0	7	0	4	2	4	3	7
Lea Valley:	519	498	295	95	32	35	23	73	512	453	635	516
Lea Valley:
East Hyde	14	12	4	4	2	3	0	2	2	2	16	16
King's Meads	20	53	27	45	nc	nc	3	12	0	0	15	6
Amwell GP - Ware / Thrift GP	4	1	2	0	0	nc	0	nc	0	nc	7	5
Amwell NR - others	77	69	18	32	21	25	6	18	32	74	162	125
Stanstead Abbotts Lakes - N lake	58	73	34	nc	nc	nc	nc	nc	69	106	96	116
Rye Meads	69	222	145	nc	nc	nc	nc	nc	294	207	140	111
Broxbourne GP	15	5	0	nc	nc	nc	nc	nc	nc	15	2	nc
Cheshunt GPs:	262	63	65	14	9	7	14	41	115	49	197	137
Cheshunt GPs:
Herts:	189	31	42	3	2	0	14	22	91	49	112	71
Herts:
Bowyers Water	132	10	29	2	0	0	1	18	68	46	98	39
Cheshunt Lake	23	9	9	0	0	0	0	0	0	3	0	26
Northmet Lake	7	0	4	1	2	0	13	4	21	0	4	2
Slipe Lane Lake	13	0	0	0	0	0	0	0	0	0	2	4
Turnford Lakes	14	12	0	0	0	0	0	0	2	0	8	0
ex-Herts:	48	15	0	0	2	3	0	12	0	0	48	66
ex-Herts:
Friday Lake	4	nc	0	0	0	0	0	nc	nc	nc	14	28
Hooks Marsh GP	0	4	0	0	0	3	0	12	nc	0	2	1
Met Police Pit	36	nc	0	0	0	0	0	nc	nc	nc	25	27
Seventy Acres Lake	8	11	nc	nc	2	nc	nc	nc	nc	nc	7	10
Essex:	25	17	23	11	5	4	0	7	24	0	37	0
Essex:
Hall Marsh Scrape	14	17	23	11	5	4	0	5	nc	0	14	0
Holyfield Marsh Lake	11	nc	0	0	nc	0	nc	2	24	nc	23	nc
Brocket Park	4	0	8	0	0	0	0	0	0	0	2	5
Panshanger Park	111	16	13	4	5	2	0	6	30	70	6	128
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	2	1	0	4	6	0	3	5	4	0	11
Aldenham Reservoir	24	nc	0	4	5	0	nc	48	26	12	nc	nc
Hilfield Park Reservoir	141	22	12	9	12	5	9	3	23	44	21	114
Tring Reservoirs	38	41	41	19	17	19	4	18	32	38	34	12

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	13	9	8	0	0	0	0	18	10	13	6	40
Colne Valley:
Hampermill Lake	0	0	0	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	0	0	nc	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	0	0	3	0	0	0	0	0	0	0	0	40
Maple Lodge	13	9	5	0	0	0	0	6	10	11	6	0
Lynsters Lake	0	0	0	0	0	0	0	10	0	2	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	2	0	0	0	0
Lea Valley:	307	143	91	8	0	0	0	9	69	118	132	257
Lea Valley:
East Hyde	16	2	2	0	0	0	0	0	0	0	0	1
King's Meads	66	11	8	2	nc	nc	0	9	34	69	51	12
Amwell GP - Ware / Thrift GP	0	3	0	0	0	nc	0	nc	0	nc	0	0
Amwell NR - others	23	9	12	4	0	0	0	0	7	10	12	27
Stanstead Abbotts Lakes - N lake	5	8	9	nc	nc	nc	nc	nc	9	3	0	27
Rye Meads	184	102	58	nc	nc	nc	nc	nc	19	34	60	180
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	13	8	2	2	0	0	0	0	0	2	9	10
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	2	5	4
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	0	2	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	5	1
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	3
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	7	6	0	0	0	0	0	0	0	0	1	6
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	nc	0	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Seventy Acres Lake	7	6	nc	nc	0	nc	nc	nc	nc	nc	1	6
Essex:	6	2	2	2	0	0	0	0	0	0	3	0
Essex:
Hall Marsh Scrape	6	2	2	2	0	0	0	0	nc	0	3	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	0	nc	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	6	0	0	0	0	0	0	0	11	16	14	2
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	1
Tyttenhanger GPs - all	17	4	6	3	0	2	0	8	4	8	2	18
Aldenham Reservoir	0	nc	0	0	0	0	nc	0	0	0	nc	nc
Hilfield Park Reservoir	0	0	0	0	0	0	0	0	0	5	0	3
Tring Reservoirs	123	64	22	5	0	0	4	44	208	384	360	107

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	158	177	93	105	92	126	168	125	128	89	151	77
Colne Valley:
Hampermill Lake	9	24	23	36	22	42	60	nc	10	nc	nc	11
Batchworth Lake	57	53	nc	19	24	24	54	54	44	35	40	6
Stocker's and Bury Lakes	55	50	29	32	17	19	28	22	44	23	59	29
Maple Lodge	20	23	26	0	15	24	17	10	17	18	23	0
Lynsters Lake	3	8	2	6	3	0	0	3	1	2	5	17
Pynesfield North/South Lakes	0	3	6	0	3	3	0	9	4	4	4	0
Helicon Lake	9	8	7	9	4	2	9	15	6	7	14	4
Troy Mill Lake	5	8	0	3	4	12	0	12	2	0	6	10
Lea Valley:	372	386	271	113	138	121	209	220	259	323	509	476
Lea Valley:
East Hyde	10	12	10	6	6	6	10	12	17	17	17	12
King's Meads	9	5	7	20	nc	nc	33	27	39	17	5	0
Amwell GP - Ware / Thrift GP	16	8	5	9	5	nc	6	nc	28	nc	7	17
Amwell NR - others	97	76	37	19	28	32	65	61	62	84	135	100
Stanstead Abbotts Lakes - N lake	13	23	24	nc	nc	nc	nc	nc	4	6	27	14
Rye Meads	47	131	82	nc	nc	nc	nc	nc	22	78	104	93
Broxbourne GP	9	12	18	nc	nc	nc	nc	nc	nc	26	29	nc
Cheshunt GPs:	171	119	88	59	99	83	95	120	87	95	185	240
Cheshunt GPs:
Herts:	86	81	66	31	40	48	80	106	85	71	121	132
Herts:
Bowyers Water	10	9	11	8	10	19	20	41	23	18	11	30
Cheshunt Lake	29	12	19	11	7	7	7	19	10	12	14	1
Northmet Lake	41	41	20	5	16	17	53	41	46	33	65	83
Slipe Lane Lake	2	10	8	5	5	1	0	1	0	6	17	8
Turnford Lakes	4	9	8	2	2	4	0	4	6	2	14	10
ex-Herts:	67	35	13	18	55	17	7	2	0	22	45	100
ex-Herts:
Friday Lake	6	nc	0	0	1	0	0	nc	nc	nc	2	4
Hooks Marsh GP	23	10	11	16	17	10	5	2	nc	22	24	35
Met Police Pit	6	nc	2	2	Present	7	2	nc	nc	nc	4	13
Seventy Acres Lake	32	25	nc	nc	37	nc	nc	nc	nc	nc	15	48
Essex:	18	3	9	10	4	18	8	12	2	2	19	8
Essex:
Hall Marsh Scrape	14	3	9	7	4	14	8	0	nc	2	13	8
Holyfield Marsh Lake	4	nc	0	3	nc	4	nc	12	2	nc	6	nc
Brocket Park	7	4	4	8	8	1	1	27	17	24	0	8
Panshanger Park	175	91	100	102	121	62	1000	1000	1000	1000	800	350
Fairlands Valley Park	126	113	76	79	75	57	181	177	147	173	235	288
Tyttenhanger GPs - all	19	22	45	39	25	30	35	36	44	65	50	29
Aldenham Reservoir	64	nc	71	48	60	58	nc	65	70	74	nc	nc
Hilfield Park Reservoir	6	7	5	16	17	24	29	12	12	11	11	13
Tring Reservoirs	98	102	42	61	94	98	287	256	261	102	147	195

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	121	66	58	0	0	5	7	27	8	16	38	81
Colne Valley:
Hampermill Lake	0	0	0	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	0	0	nc	0	0	0	0	0	2	8	0	13
Stocker's and Bury Lakes	116	59	52	0	0	1	0	2	0	0	34	64
Maple Lodge	2	6	6	0	0	4	7	4	6	8	4	1
Lynsters Lake	0	0	0	0	0	0	0	0	0	0	0	0
Pynesfield North/South Lakes	0	0	0	0	0	0	0	0	0	0	0	3
Helicon Lake	3	1	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	0	0	0	0	0	0	21	0	0	0	0
Lea Valley:	125	130	124	10	3	1	5	4	61	63	99	220
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	50	11	7	4	nc	nc	3	1	13	0	0	2
Amwell GP - Ware / Thrift GP	0	0	0	0	0	nc	0	nc	0	nc	1	5
Amwell NR - others	5	10	14	6	3	1	1	3	21	18	22	18
Stanstead Abbotts Lakes - N lake	16	8	8	nc	nc	nc	nc	nc	6	11	9	34
Rye Meads	13	51	53	nc	nc	nc	nc	nc	12	20	34	26
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	8	0	nc
Cheshunt GPs:	41	50	42	0	0	0	1	0	9	6	33	135
Cheshunt GPs:
Herts:	21	31	8	0	0	0	1	0	9	4	22	117
Herts:
Bowyers Water	2	4	5	0	0	0	0	0	5	3	1	43
Cheshunt Lake	7	0	0	0	0	0	0	0	0	0	0	3
Northmet Lake	0	19	2	0	0	0	1	0	2	1	12	9
Slipe Lane Lake	3	0	1	0	0	0	0	0	0	0	4	57
Turnford Lakes	9	8	0	0	0	0	0	0	2	0	5	5
ex-Herts:	16	12	2	0	0	0	0	0	0	2	7	18
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	12
Hooks Marsh GP	4	2	0	0	0	0	0	0	nc	2	0	0
Met Police Pit	4	nc	2	0	0	0	0	nc	nc	nc	7	5
Seventy Acres Lake	8	10	nc	nc	0	nc	nc	nc	nc	nc	0	1
Essex:	4	7	32	0	0	0	0	0	0	0	4	0
Essex:
Hall Marsh Scrape	4	7	32	0	0	0	0	0	nc	0	4	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	0	nc	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	0	0	10
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	1	3	0	0	0	0	2	0	1	2	2	0
Aldenham Reservoir	4	nc	4	0	0	0	nc	0	1	0	nc	nc
Hilfield Park Reservoir	7	4	4	5	2	0	0	0	30	61	7	5
Tring Reservoirs	136	226	100	19	2	0	2	42	140	219	186	147

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	37	77	34	11	7	12	5	9	24	37	82	71
Colne Valley:
Hampermill Lake	4	0	1	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	1	2	nc	0	0	0	0	0	0	0	1	3
Stocker's and Bury Lakes	14	54	23	4	2	3	2	7	24	31	74	60
Maple Lodge	3	8	8	7	5	9	3	1	0	2	2	0
Lynsters Lake	6	0	0	0	0	0	0	1	0	0	0	0
Pynesfield North/South Lakes	4	9	0	0	0	0	0	0	0	4	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	4
Troy Mill Lake	5	4	2	0	0	0	0	0	0	0	5	4
Lea Valley:	192	161	73	19	12	2	2	31	37	51	121	143
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	10	11	2	nc	nc	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	14	2	6	0	0	nc	0	nc	4	nc	15	18
Amwell NR - others	80	86	9	8	1	2	1	15	19	30	53	43
Stanstead Abbotts Lakes - N lake	8	12	11	nc	nc	nc	nc	nc	2	14	7	9
Rye Meads	22	25	23	nc	nc	nc	nc	nc	6	2	14	3
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	68	26	13	9	11	0	1	16	6	5	32	70
Cheshunt GPs:
Herts:	36	17	13	1	5	0	0	5	6	3	7	35
Herts:
Bowyers Water	21	14	6	1	0	0	0	5	6	3	5	9
Cheshunt Lake	10	0	0	0	0	0	0	0	0	0	0	17
Northmet Lake	2	3	7	0	5	0	0	0	0	0	2	8
Slipe Lane Lake	2	0	0	0	0	0	0	0	0	0	0	1
Turnford Lakes	1	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	30	9	0	0	6	0	1	0	0	1	18	35
ex-Herts:
Friday Lake	11	nc	0	0	0	0	0	nc	nc	nc	3	7
Hooks Marsh GP	5	1	0	0	0	0	1	0	nc	1	6	9
Met Police Pit	7	nc	0	0	0	0	0	nc	nc	nc	2	7
Seventy Acres Lake	7	8	nc	nc	6	nc	nc	nc	nc	nc	7	12
Essex:	2	0	0	8	0	0	0	11	0	1	7	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	nc	1	1	0
Holyfield Marsh Lake	2	nc	0	8	nc	0	nc	11	0	nc	6	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	4	0	1	0	0	0	0	3	6	0	0	12
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	13	1	3	0	0	0	1	6	0	1	5	5
Aldenham Reservoir	16	nc	25	1	0	3	nc	23	1	0	nc	nc
Hilfield Park Reservoir	35	22	0	0	0	16	84	51	1	10	23	26
Tring Reservoirs	122	121	49	10	12	12	9	8	115	77	60	88

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	448	416	344	141	118	91	56	147	259	194	446	280
Colne Valley:
Hampermill Lake	0	29	36	14	16	10	17	nc	28	nc	nc	12
Batchworth Lake	65	22	nc	4	15	3	1	0	10	13	22	8
Stocker's and Bury Lakes	241	181	189	75	48	44	8	40	82	117	306	152
Maple Lodge	13	38	33	24	21	15	20	23	7	1	11	0
Lynsters Lake	34	50	10	2	0	0	0	10	0	0	30	10
Pynesfield North/South Lakes	43	42	41	0	0	0	0	6	117	45	50	12
Helicon Lake	29	51	14	20	10	12	4	1	10	10	7	76
Troy Mill Lake	23	3	21	2	8	7	6	67	5	8	20	10
Lea Valley:	1034	829	818	271	205	117	145	183	411	353	1073	734
Lea Valley:
East Hyde	7	12	10	4	0	3	0	0	0	0	0	0
King's Meads	11	20	11	19	nc	nc	5	4	1	1	0	2
Amwell GP - Ware / Thrift GP	87	41	37	43	21	nc	37	nc	44	nc	110	84
Amwell NR - others	102	105	143	73	72	32	8	51	45	43	84	117
Stanstead Abbotts Lakes - N lake	78	71	82	nc	nc	nc	nc	nc	70	45	90	83
Rye Meads	120	135	143	nc	nc	nc	nc	nc	73	113	137	93
Broxbourne GP	195	71	97	nc	nc	nc	nc	nc	nc	27	149	nc
Cheshunt GPs:	434	374	295	132	112	82	95	128	178	124	503	355
Cheshunt GPs:
Herts:	205	304	141	83	38	51	78	103	143	109	176	170
Herts:
Bowyers Water	21	57	38	35	16	2	0	17	24	24	50	24
Cheshunt Lake	43	0	15	0	0	0	0	0	0	0	2	11
Northmet Lake	64	103	46	44	22	46	78	86	109	56	87	63
Slipe Lane Lake	44	32	33	0	0	3	0	0	2	7	20	51
Turnford Lakes	33	112	9	4	0	0	0	0	8	22	17	21
ex-Herts:	205	70	106	33	74	20	17	8	0	15	213	185
ex-Herts:
Friday Lake	28	nc	19	24	0	3	0	nc	nc	nc	26	20
Hooks Marsh GP	31	16	11	3	0	12	17	8	nc	15	19	20
Met Police Pit	92	nc	76	6	0	5	0	nc	nc	nc	119	99
Seventy Acres Lake	54	54	nc	nc	74	nc	nc	nc	nc	nc	49	46
Essex:	24	0	48	16	0	11	0	17	35	0	114	0
Essex:
Hall Marsh Scrape	5	0	0	0	0	0	0	0	nc	0	0	0
Holyfield Marsh Lake	19	nc	48	16	nc	11	nc	17	35	nc	114	nc
Brocket Park	14	11	6	3	4	3	0	0	0	1	0	10
Panshanger Park	48	40	58	39	32	28	40	67	16	9	4	44
Fairlands Valley Park	0	0	0	0	2	0	0	0	0	0	0	0
Tyttenhanger GPs - all	31	17	41	19	20	11	22	18	12	10	5	19
Aldenham Reservoir	48	nc	34	23	7	7	nc	43	31	3	nc	nc
Hilfield Park Reservoir	86	63	69	51	9	26	93	193	48	70	109	200
Tring Reservoirs	135	181	312	119	55	72	35	25	184	71	171	170

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	19	13	7	0	0	0	0	0	0	0	3	11
Colne Valley:
Hampermill Lake	0	0	0	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	0	0	nc	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	19	13	7	0	0	0	0	0	0	0	3	9
Maple Lodge	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	0	0	0	0	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	1
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	1
Lea Valley:	20	23	19	0	0	0	0	0	0	0	5	3
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	0	nc	nc	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	5	0	0	0	nc	0	nc	0	nc	0	0
Amwell NR - others	10	16	11	0	0	0	0	0	0	0	4	3
Stanstead Abbotts Lakes - N lake	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	10	2	8	0	0	0	0	0	0	0	1	0
Cheshunt GPs:
Herts:	2	2	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	2	2	0	0	0	0	0	0	0	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:	8	0	8	0	0	0	0	0	0	0	1	0
ex-Herts:
Friday Lake	8	nc	8	0	0	0	0	nc	nc	nc	1	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	nc	0	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Seventy Acres Lake	0	0	nc	nc	0	nc	nc	nc	nc	nc	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	nc	0	0	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	0	nc	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	0	0	0	0	0
Aldenham Reservoir	0	nc	0	0	0	0	nc	0	0	0	nc	nc
Hilfield Park Reservoir	0	1	0	0	0	0	0	0	0	0	3	0
Tring Reservoirs	9	7	12	0	0	0	0	0	0	0	0	0

Ruddy DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	0	0	0	2	3	1	3	3	3	1	0	4
Colne Valley:
Hampermill Lake	0	0	0	0	0	0	0	nc	1	nc	nc	0
Batchworth Lake	0	0	nc	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	0	0	0	2	2	0	0	1	1	0	0	4
Maple Lodge	0	0	0	0	1	1	3	2	1	1	0	0
Lynsters Lake	0	0	0	0	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	0
Lea Valley:	4	2	0	0	1	0	0	0	1	0	0	0
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	0	nc	nc	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	0	0	0	0	nc	0	nc	0	nc	0	0
Amwell NR - others	0	0	0	0	0	0	0	0	0	0	0	0
Stanstead Abbotts Lakes - N lake	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	4	2	0	0	1	0	0	0	1	0	0	0
Cheshunt GPs:
Herts:	1	0	0	0	0	0	0	0	1	0	0	0
Herts:
Bowyers Water	1	0	0	0	0	0	0	0	1	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:	2	2	0	0	1	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Hooks Marsh GP	0	0	0	0	0	0	0	0	nc	0	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Seventy Acres Lake	2	2	nc	nc	1	nc	nc	nc	nc	nc	0	0
Essex:	1	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	nc	0	0	0
Holyfield Marsh Lake	1	nc	0	0	nc	0	nc	0	0	nc	0	nc
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	0	0	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	0	0	0	2	1	3	4	6	0	8
Aldenham Reservoir	0	nc	0	0	0	0	nc	0	0	0	nc	nc
Hilfield Park Reservoir	26	5	3	4	1	1	0	8	3	12	7	3
Tring Reservoirs	2	4	3	1	2	0	0	1	0	0	0	1

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	9	14	18	10	11	9	11	12	13	9	17	1
Colne Valley:
Hampermill Lake	1	0	2	0	0	0	0	nc	0	nc	nc	0
Batchworth Lake	1	1	nc	0	0	0	0	0	0	0	1	0
Stocker's and Bury Lakes	0	1	2	0	0	0	0	0	0	0	2	1
Maple Lodge	6	12	14	10	11	9	11	10	9	7	4	0
Lynsters Lake	0	0	0	0	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	1	0	0	0	0	0	0	2	4	2	10	0
Lea Valley:	22	26	17	5	3	2	3	14	40	42	45	51
Lea Valley:
East Hyde	3	2	2	2	2	2	1	2	2	3	4	2
King's Meads	0	1	1	3	nc	nc	2	10	0	0	0	0
Amwell GP - Ware / Thrift GP	2	0	0	0	0	nc	0	nc	0	nc	0	0
Amwell NR - others	0	0	0	0	0	0	0	0	1	0	1	1
Stanstead Abbotts Lakes - N lake	0	1	0	nc	nc	nc	nc	nc	2	0	0	1
Rye Meads	11	18	14	nc	nc	nc	nc	nc	34	38	37	42
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	1	nc
Cheshunt GPs:	6	4	0	0	1	0	0	2	1	1	2	5
Cheshunt GPs:
Herts:	1	1	0	0	0	0	0	2	1	1	0	0
Herts:
Bowyers Water	0	0	0	0	0	0	0	2	1	1	0	0
Cheshunt Lake	1	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	1	0	0	0	0	0	0	0	0	0	0
ex-Herts:	5	3	0	0	1	0	0	0	0	0	1	5
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	1	1
Hooks Marsh GP	0	0	0	0	0	0	0	0	nc	0	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Seventy Acres Lake	5	3	nc	nc	1	nc	nc	nc	nc	nc	0	4
Essex:	0	0	0	0	0	0	0	0	0	0	1	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	nc	0	0	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	0	nc	1	nc
Brocket Park	6	1	0	3	4	2	4	8	11	10	11	6
Panshanger Park	4	0	4	4	5	5	4	16	30	29	10	1
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	0
Tyttenhanger GPs - all	0	0	2	1	1	0	1	3	2	3	3	2
Aldenham Reservoir	0	nc	0	0	0	0	nc	0	3	1	nc	nc
Hilfield Park Reservoir	17	13	20	10	7	7	14	24	36	23	19	22
Tring Reservoirs	3	1	1	2	0	0	1	1	12	13	7	9

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	25	52	56	40	42	56	62	54	95	75	38	57
Colne Valley:
Hampermill Lake	0	16	17	13	15	23	23	nc	26	nc	nc	19
Batchworth Lake	4	2	nc	2	2	4	3	3	4	5	4	3
Stocker's and Bury Lakes	5	11	19	17	11	10	18	27	35	47	15	17
Maple Lodge	0	0	0	0	0	1	0	0	0	0	0	0
Lynsters Lake	3	8	4	2	4	6	4	2	2	4	4	2
Pynesfield North/South Lakes	6	6	11	2	0	4	6	5	7	6	6	2
Helicon Lake	3	2	1	2	4	2	2	7	8	5	4	6
Troy Mill Lake	4	7	4	2	6	6	6	10	13	8	5	8
Lea Valley:	44	45	54	39	32	53	51	45	56	45	72	53
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	1	nc	nc	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	6	3	3	3	2	nc	6	nc	4	nc	3	5
Amwell NR - others	0	8	7	2	6	11	13	1	7	11	21	14
Stanstead Abbotts Lakes - N lake	0	3	8	nc	nc	nc	nc	nc	13	7	12	5
Rye Meads	0	1	1	nc	nc	nc	nc	nc	5	1	0	1
Broxbourne GP	5	6	4	nc	nc	nc	nc	nc	nc	11	4	nc
Cheshunt GPs:	33	24	31	33	24	42	32	44	27	15	32	28
Cheshunt GPs:
Herts:	14	17	10	12	11	15	18	26	18	8	11	12
Herts:
Bowyers Water	6	6	6	6	5	8	9	13	6	2	4	3
Cheshunt Lake	2	2	3	2	2	2	0	0	0	0	0	2
Northmet Lake	3	7	0	3	3	5	7	11	11	4	5	6
Slipe Lane Lake	0	0	0	1	0	0	2	0	0	0	0	1
Turnford Lakes	3	2	1	0	1	0	0	2	1	2	2	0
ex-Herts:	15	7	12	13	13	21	14	7	0	7	17	16
ex-Herts:
Friday Lake	2	nc	2	2	0	2	1	nc	nc	nc	1	1
Hooks Marsh GP	4	3	7	1	1	14	8	7	nc	7	5	4
Met Police Pit	3	nc	3	10	4	5	5	nc	nc	nc	2	2
Seventy Acres Lake	6	4	nc	nc	8	nc	nc	nc	nc	nc	9	9
Essex:	4	0	9	8	0	6	0	11	9	0	4	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	nc	0	0	0
Holyfield Marsh Lake	4	nc	9	8	nc	6	nc	11	9	nc	4	nc
Brocket Park	0	1	2	2	4	5	1	0	2	0	0	0
Panshanger Park	0	0	1	4	4	4	7	7	6	2	0	0
Fairlands Valley Park	0	0	0	0	0	2	0	0	1	0	0	0
Tyttenhanger GPs - all	2	4	8	9	7	9	14	17	22	7	18	22
Aldenham Reservoir	15	nc	22	17	14	8	nc	6	9	13	nc	nc
Hilfield Park Reservoir	4	9	14	16	12	19	23	43	43	31	21	11
Tring Reservoirs	13	33	14	14	18	20	24	21	26	44	43	28

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	76	37	21	29	20	17	26	33	44	60	70	44
Colne Valley:
Hampermill Lake	0	3	0	0	1	1	0	nc	2	nc	nc	2
Batchworth Lake	8	1	nc	2	4	1	2	7	9	9	10	4
Stocker's and Bury Lakes	48	25	10	19	8	6	9	18	31	47	52	32
Maple Lodge	0	0	3	3	6	6	2	1	0	0	0	0
Lynsters Lake	2	0	0	1	0	0	0	0	0	0	1	0
Pynesfield North/South Lakes	11	6	3	0	0	0	1	0	0	1	0	1
Helicon Lake	2	0	0	1	0	0	0	0	0	0	0	2
Troy Mill Lake	5	2	5	3	1	3	12	7	2	3	7	3
Lea Valley:	59	64	57	48	31	20	33	35	58	71	68	62
Lea Valley:
East Hyde	4	9	2	2	2	2	4	3	3	1	3	2
King's Meads	0	0	0	0	nc	nc	5	1	1	0	1	0
Amwell GP - Ware / Thrift GP	2	1	1	0	2	nc	1	nc	4	nc	3	5
Amwell NR - others	8	28	34	36	22	15	3	13	17	31	14	12
Stanstead Abbotts Lakes - N lake	3	2	3	nc	nc	nc	nc	nc	3	1	4	13
Rye Meads	3	7	4	nc	nc	nc	nc	nc	19	12	3	1
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	5	0	nc
Cheshunt GPs:	39	17	13	10	5	3	20	18	11	21	40	29
Cheshunt GPs:
Herts:	21	4	9	6	2	1	10	8	9	12	13	13
Herts:
Bowyers Water	4	2	0	1	0	0	4	2	0	5	2	0
Cheshunt Lake	1	0	4	3	0	0	0	0	0	0	0	2
Northmet Lake	1	0	2	0	0	1	4	5	9	7	9	7
Slipe Lane Lake	8	1	3	2	1	0	0	0	0	0	1	3
Turnford Lakes	7	1	0	0	1	0	2	1	0	0	1	1
ex-Herts:	18	13	4	4	3	2	10	7	0	8	22	16
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Hooks Marsh GP	10	6	4	0	0	2	9	7	nc	8	5	11
Met Police Pit	0	nc	0	4	0	0	1	nc	nc	nc	0	1
Seventy Acres Lake	8	7	nc	nc	3	nc	nc	nc	nc	nc	17	4
Essex:	0	0	0	0	0	0	0	3	2	1	5	0
Essex:
Hall Marsh Scrape	0	0	0	0	0	0	0	0	nc	1	0	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	3	2	nc	5	nc
Brocket Park	13	10	11	2	6	3	3	4	7	9	14	7
Panshanger Park	2	7	4	2	3	1	2	4	42	14	2	6
Fairlands Valley Park	0	0	1	0	1	0	0	0	0	3	0	0
Tyttenhanger GPs - all	15	5	6	6	1	2	1	2	1	3	10	3
Aldenham Reservoir	11	nc	0	3	3	0	nc	0	0	2	nc	nc
Hilfield Park Reservoir	7	1	3	1	2	0	1	3	3	4	8	6
Tring Reservoirs	19	22	17	9	15	16	18	17	65	29	65	22

Grey HeronTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	20	45	45	48	18	31	12	14	28	6	10	10
Colne Valley:
Hampermill Lake	1	4	3	4	6	9	3	nc	6	nc	nc	7
Batchworth Lake	2	0	nc	1	1	0	1	3	3	1	2	0
Stocker's and Bury Lakes	13	40	40	40	7	16	3	5	9	3	6	2
Maple Lodge	0	0	1	2	3	1	0	2	1	1	0	0
Lynsters Lake	1	1	0	0	1	1	0	0	0	0	0	0
Pynesfield North/South Lakes	0	0	0	0	0	1	1	2	5	0	1	0
Helicon Lake	1	0	0	0	0	2	0	0	0	1	0	0
Troy Mill Lake	2	0	1	1	0	1	4	2	4	0	1	1
Lea Valley:	13	16	34	22	24	24	20	16	24	19	27	22
Lea Valley:
East Hyde	4	4	4	2	2	4	4	2	3	4	2	4
King's Meads	0	0	0	0	nc	nc	1	0	0	0	2	0
Amwell GP - Ware / Thrift GP	2	2	0	0	0	nc	2	nc	1	nc	1	1
Amwell NR - others	0	4	24	18	19	18	8	6	4	3	5	5
Stanstead Abbotts Lakes - N lake	3	1	0	nc	nc	nc	nc	nc	3	2	0	2
Rye Meads	1	0	4	nc	nc	nc	nc	nc	8	5	9	6
Broxbourne GP	0	0	0	nc	nc	nc	nc	nc	nc	0	0	nc
Cheshunt GPs:	3	5	2	2	3	2	5	8	5	5	8	4
Cheshunt GPs:
Herts:	1	1	0	1	1	1	4	6	4	3	5	3
Herts:
Bowyers Water	1	1	0	1	0	0	2	3	2	2	3	1
Cheshunt Lake	0	0	0	0	0	1	0	0	0	0	0	1
Northmet Lake	0	0	0	0	0	0	2	3	2	1	1	1
Slipe Lane Lake	0	0	0	0	1	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	1	0
ex-Herts:	2	2	1	0	0	0	1	1	0	2	3	1
ex-Herts:
Friday Lake	0	nc	0	0	0	0	0	nc	nc	nc	0	0
Hooks Marsh GP	1	1	1	0	0	0	1	1	nc	2	0	0
Met Police Pit	0	nc	0	0	0	0	0	nc	nc	nc	1	1
Seventy Acres Lake	1	1	nc	nc	0	nc	nc	nc	nc	nc	2	0
Essex:	0	2	1	1	2	1	0	1	1	0	0	0
Essex:
Hall Marsh Scrape	0	2	1	1	2	1	0	1	nc	0	0	0
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	0	1	nc	0	nc
Brocket Park	2	0	0	1	2	0	0	1	0	1	2	1
Panshanger Park	3	1	0	1	3	1	3	7	6	3	7	3
Fairlands Valley Park	0	1	0	0	0	0	1	0	0	0	0	1
Tyttenhanger GPs - all	2	1	1	1	3	4	4	2	3	3	0	2
Aldenham Reservoir	2	nc	0	0	3	3	nc	3	2	3	nc	nc
Hilfield Park Reservoir	0	0	0	0	0	1	0	0	2	1	0	2
Tring Reservoirs	6	31	33	31	18	0	18	11	12	12	8	4

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	106	84	98	44	34	32	36	54	77	47	58	58
Colne Valley:
Hampermill Lake	38	32	43	21	9	7	13	nc	23	nc	nc	32
Batchworth Lake	4	13	nc	1	3	1	2	7	7	14	12	3
Stocker's and Bury Lakes	12	16	21	3	5	6	4	10	10	11	14	11
Maple Lodge	6	11	21	14	12	14	11	17	20	12	6	5
Lynsters Lake	26	1	5	0	0	0	1	5	9	5	5	1
Pynesfield North/South Lakes	7	2	1	0	1	2	0	0	1	3	17	1
Helicon Lake	7	8	6	5	3	1	2	2	1	0	1	1
Troy Mill Lake	6	1	1	0	1	1	3	13	6	2	3	4
Lea Valley:	189	181	123	32	47	36	43	70	181	189	181	143
Lea Valley:
East Hyde	16	16	10	6	6	6	6	7	10	17	0	22
King's Meads	7	9	10	2	nc	nc	4	20	44	28	16	5
Amwell GP - Ware / Thrift GP	3	4	0	0	3	nc	0	nc	0	nc	2	3
Amwell NR - others	14	22	10	4	13	9	6	27	35	25	32	8
Stanstead Abbotts Lakes - N lake	1	3	6	nc	nc	nc	nc	nc	6	2	4	5
Rye Meads	54	49	32	nc	nc	nc	nc	nc	60	78	70	36
Broxbourne GP	9	2	2	nc	nc	nc	nc	nc	nc	2	2	nc
Cheshunt GPs:	85	76	53	20	25	21	27	16	26	37	55	64
Cheshunt GPs:
Herts:	37	35	22	3	6	7	12	7	25	24	24	32
Herts:
Bowyers Water	8	3	2	1	1	2	4	3	15	13	6	5
Cheshunt Lake	12	17	14	0	1	1	1	1	8	5	4	4
Northmet Lake	17	11	5	1	3	3	6	2	1	6	8	15
Slipe Lane Lake	0	2	0	0	0	0	0	0	0	0	5	1
Turnford Lakes	0	2	1	1	1	1	1	1	1	0	1	7
ex-Herts:	33	28	14	12	7	7	8	3	0	4	18	30
ex-Herts:
Friday Lake	0	nc	0	1	0	0	0	nc	nc	nc	2	0
Hooks Marsh GP	10	10	12	9	1	5	4	3	nc	4	1	14
Met Police Pit	0	nc	2	2	2	2	4	nc	nc	nc	3	3
Seventy Acres Lake	23	18	nc	nc	4	nc	nc	nc	nc	nc	12	13
Essex:	15	13	17	5	12	7	7	6	1	9	13	2
Essex:
Hall Marsh Scrape	15	13	17	5	12	7	7	4	nc	9	11	2
Holyfield Marsh Lake	0	nc	0	0	nc	0	nc	2	1	nc	2	nc
Brocket Park	34	17	22	11	10	12	10	11	38	27	9	25
Panshanger Park	7	11	1	7	7	2	8	8	14	12	6	12
Fairlands Valley Park	15	11	2	6	8	6	5	5	10	9	10	14
Tyttenhanger GPs - all	7	11	12	8	8	5	8	11	24	17	23	12
Aldenham Reservoir	21	nc	12	4	2	0	nc	20	54	44	nc	nc
Hilfield Park Reservoir	9	3	3	3	3	5	5	10	14	11	0	7
Tring Reservoirs	17	13	0	15	13	11	22	55	64	91	79	19

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	1312	671	556	322	297	320	545	669	1275	1164	1437	1143
Colne Valley:
Hampermill Lake	33	0	44	51	31	36	48	nc	33	nc	nc	31
Batchworth Lake	112	72	nc	51	51	45	67	71	85	92	121	128
Stocker's and Bury Lakes	289	166	123	60	63	37	170	224	471	486	544	456
Maple Lodge	25	29	38	19	21	24	25	37	15	14	10	2
Lynsters Lake	164	118	76	13	17	18	12	90	70	80	150	60
Pynesfield North/South Lakes	196	110	64	51	40	63	56	83	96	146	195	233
Helicon Lake	123	81	69	26	23	30	22	21	70	66	87	130
Troy Mill Lake	370	95	142	51	51	67	145	143	435	280	330	103
Lea Valley:	2988	1674	1360	644	684	642	849	739	1693	1941	3011	2621
Lea Valley:
East Hyde	16	0	9	6	6	6	6	4	11	10	0	17
King's Meads	39	43	44	43	nc	nc	91	66	3	3	3	18
Amwell GP - Ware / Thrift GP	87	58	46	36	23	nc	60	nc	34	nc	51	55
Amwell NR - others	320	264	193	71	69	101	176	262	330	422	505	535
Stanstead Abbotts Lakes - N lake	224	83	71	nc	nc	nc	nc	nc	133	164	258	173
Rye Meads	125	192	139	nc	nc	nc	nc	nc	610	573	584	454
Broxbourne GP	135	115	103	nc	nc	nc	nc	nc	nc	66	154	nc
Cheshunt GPs:	2042	919	755	488	586	535	516	407	572	703	1456	1369
Cheshunt GPs:
Herts:	888	573	457	286	264	242	317	293	359	607	841	715
Herts:
Bowyers Water	494	147	89	42	59	86	175	175	203	350	437	290
Cheshunt Lake	62	35	34	18	9	9	4	4	7	29	23	36
Northmet Lake	198	186	177	95	126	84	74	72	112	161	245	202
Slipe Lane Lake	96	122	97	106	57	46	51	30	22	51	102	113
Turnford Lakes	38	83	60	25	13	17	13	12	15	16	34	74
ex-Herts:	541	340	247	158	313	172	194	51	0	91	493	650
ex-Herts:
Friday Lake	42	nc	25	15	8	20	22	nc	nc	nc	84	84
Hooks Marsh GP	210	117	100	43	45	50	88	51	nc	91	69	67
Met Police Pit	92	nc	122	100	113	102	84	nc	nc	nc	85	99
Seventy Acres Lake	197	223	nc	nc	147	nc	nc	nc	nc	nc	255	400
Essex:	613	6	51	44	9	121	5	63	213	5	122	4
Essex:
Hall Marsh Scrape	10	6	11	10	9	7	5	5	nc	5	5	4
Holyfield Marsh Lake	603	nc	40	34	nc	114	nc	58	213	nc	117	nc
Brocket Park	95	42	38	23	25	33	37	74	75	61	61	76
Panshanger Park	68	67	66	58	46	49	67	86	107	89	50	66
Fairlands Valley Park	2	3	7	9	5	4	5	5	6	6	5	6
Tyttenhanger GPs - all	87	61	68	41	41	41	129	98	106	99	97	119
Aldenham Reservoir	206	nc	79	58	72	110	nc	260	354	362	nc	nc
Hilfield Park Reservoir	334	159	111	72	80	121	250	247	254	212	214	182
Tring Reservoirs	521	349	317	187	184	345	621	706	1071	826	1006	963