Herts Bird Club - WeBS 2012

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 2012 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.

The Sunday count dates in 2012 were; 15 Jan, 12 Feb, 11 Mar, 8 Apr, 20 May, 24 Jun, 22 Jul, 19 Aug, 16 Sep, 14 Oct, 18 Nov, and 16 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:	105	120	73	62	68	52	37	57	95	95	71	68
Colne Valley:
Hampermill Lake	nc	0	0	6	6	2	0	0	nc	0	0	1
Batchworth Lake	9	3	4	7	3	4	2	3	6	3	3	3
Stocker's and Bury Lakes	43	72	46	39	45	34	18	28	38	23	22	15
Maple Lodge NR	0	0	2	2	2	2	2	2	0	2	2	2
Lynsters Lake	28	28	8	2	6	4	3	3	2	2	6	0
Pynesfield North/South Lakes	4	6	2	2	4	4	4	4	5	2	2	4
Helicon Lake	17	4	2	2	0	2	0	0	0	0	0	2
Troy Mill Lake	4	7	9	2	2	0	8	17	44	63	36	41
Lea Valley:	149	117	139	86	69	95	106	76	87	117	145	128
Lea Valley:
East Hyde	6	2	2	2	2	2	2	2	2	2	2	2
Brocket Park	0	0	0	0	1	1	2	2	2	nc	2	nc
Stanborough Lakes North	nc	2	4	2	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	2	0	nc	0	nc	nc	nc	0	nc
King's Meads	7	0	1	1	3	0	5	0	6	16	7	7
Amwell GP - Ware / Thrift GP	nc	2	nc	5	0	0	nc	0	nc	nc	nc	1
Amwell NR - others	18	13	6	5	4	6	10	20	1	10	13	11
Stanstead Abbotts Lakes - N lake	12	5	6	nc	nc	nc	nc	nc	2	2	4	5
Rye Meads	7	9	6	nc	nc	nc	nc	nc	16	17	13	11
Broxbourne GP	8	6	9	6	6	6	5	nc	0	4	5	2
Cheshunt GPs:	91	78	105	63	53	80	82	52	58	66	99	89
Cheshunt GPs:
Herts:	50	39	70	19	11	9	11	6	14	30	50	13
Herts:
Bowyers Water	25	4	17	2	nc	1	2	nc	3	10	23	4
Cheshunt Lake	1	12	3	2	2	0	1	0	2	2	2	3
Northmet Lake	3	4	2	0	1	3	3	2	4	8	5	3
Slipe Lane Lake	4	6	4	1	2	2	2	2	1	4	2	0
Turnford Lakes	5	3	15	14	1	1	0	0	0	2	5	3
ex-Herts:	41	39	32	40	33	64	61	46	44	36	45	68
ex-Herts:
Friday Lake	nc	nc	2	4	nc	nc	nc	nc	0	0	2	nc
Hooks Marsh GP	6	nc	3	11	8	3	2	nc	nc	7	4	26
Met Police Pit	nc	nc	1	1	nc	nc	nc	nc	0	0	0	nc
Seventy Acres Lake	35	39	26	24	25	61	59	46	44	29	39	42
Essex:	0	0	3	4	9	7	10	0	0	0	4	8
Essex:
Hall Marsh Scrape	0	nc	3	4	9	7	10	nc	nc	0	4	8
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	2	3	7	7	nc	5	0	5	6
Panshanger Park	4	5	4	4	2	3	3	4	9	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	1	0	nc	0	nc
Verulamium Park	15	20	30	36	36	16	nc	18	24	23	nc	17
Tyttenhanger GPs - all	12	1	7	11	0	3	2	3	4	4	4	10
Aldenham Reservoir	13	18	nc	nc	nc	nc	nc	nc	12	49	31	4
Hilfield Park Reservoir	4	2	4	2	2	5	nc	nc	nc	nc	nc	nc
Tring Reservoirs	27	54	45	0	0	34	48	51	49	51	49	18

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	127	58	241	123	178	214	242	287	203	159	64	66
Colne Valley:
Hampermill Lake	nc	0	2	11	10	10	10	3	nc	19	0	0
Batchworth Lake	37	0	28	22	18	7	2	17	34	2	0	7
Stocker's and Bury Lakes	87	50	141	76	85	197	141	224	129	125	30	34
Maple Lodge NR	0	0	13	4	60	0	0	0	0	7	0	0
Lynsters Lake	0	6	52	4	4	0	0	2	0	0	23	24
Pynesfield North/South Lakes	0	0	2	2	0	0	0	8	0	0	0	0
Helicon Lake	3	0	1	2	1	0	0	0	0	0	10	0
Troy Mill Lake	0	2	2	2	0	0	89	33	40	6	1	1
Lea Valley:	278	380	382	331	231	429	378	215	352	236	249	178
Lea Valley:
East Hyde	41	85	26	20	24	24	14	14	110	59	42	45
Brocket Park	94	58	16	11	0	0	0	0	0	nc	64	nc
Stanborough Lakes North	nc	7	32	21	nc	nc	nc	nc	nc	9	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	21	nc	nc	nc	0	nc
King's Meads	2	0	0	3	4	0	2	0	4	49	9	30
Amwell GP - Ware / Thrift GP	nc	12	nc	8	2	11	nc	0	nc	nc	nc	0
Amwell NR - others	54	134	115	120	88	138	72	104	2	20	33	11
Stanstead Abbotts Lakes - N lake	47	9	25	nc	nc	nc	nc	nc	57	6	2	2
Rye Meads	0	0	12	nc	nc	nc	nc	nc	30	0	27	0
Broxbourne GP	8	12	15	4	7	13	7	nc	20	20	12	22
Cheshunt GPs:	32	63	141	144	106	243	262	97	129	73	60	68
Cheshunt GPs:
Herts:	16	34	81	47	54	182	192	59	76	49	15	44
Herts:
Bowyers Water	0	6	12	15	nc	58	21	nc	0	1	5	0
Cheshunt Lake	3	7	11	9	9	2	36	22	6	0	4	4
Northmet Lake	5	2	25	12	20	77	55	13	34	36	2	40
Slipe Lane Lake	0	0	2	2	2	0	0	5	2	0	0	0
Turnford Lakes	4	0	2	9	2	0	0	7	4	0	4	0
ex-Herts:	16	29	58	87	35	60	60	38	53	24	44	7
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	2	nc
Hooks Marsh GP	6	nc	29	21	12	45	16	nc	nc	0	4	0
Met Police Pit	nc	nc	5	38	nc	nc	nc	nc	16	0	0	nc
Seventy Acres Lake	10	29	24	28	23	15	44	38	37	24	38	7
Essex:	0	0	2	10	17	1	10	0	0	0	1	17
Essex:
Hall Marsh Scrape	0	nc	2	10	17	1	10	nc	nc	0	1	17
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	5	4	0	0	nc	0	0	0	0
Panshanger Park	4	6	23	44	21	22	8	42	0	nc	nc	30
Fairlands Valley Park	130	91	92	82	62	13	224	112	28	nc	19	nc
Verulamium Park	68	46	30	29	22	93	nc	89	110	104	nc	61
Tyttenhanger GPs - all	21	74	72	0	8	32	17	59	30	78	30	14
Aldenham Reservoir	75	211	nc	nc	nc	nc	nc	nc	1	1	88	61
Hilfield Park Reservoir	30	6	1	4	4	139	nc	nc	nc	nc	nc	nc
Tring Reservoirs	148	109	71	39	18	116	19	111	13	2	44	0

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	39	133	15	0	1	0	0	0	1	30	35	50
Colne Valley:
Hampermill Lake	nc	0	0	0	0	0	0	0	nc	0	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	4	0	11	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	14	0	0	0	0	0	0	0	0	0	5	16
Pynesfield North/South Lakes	15	85	4	0	0	0	0	0	0	0	4	12
Helicon Lake	6	8	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	40	0	0	1	0	0	0	1	30	26	22
Lea Valley:	217	124	31	1	0	0	0	0	13	138	153	174
Lea Valley:
East Hyde	0	6	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	13	20	16	0	0	0	0	0	0	9	17	33
Amwell GP - Ware / Thrift GP	nc	3	nc	0	0	0	nc	0	nc	nc	nc	0
Amwell NR - others	61	14	0	1	0	0	0	0	2	14	11	2
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	2	0	0
Broxbourne GP	0	0	0	0	0	0	0	nc	0	0	0	0
Cheshunt GPs:	143	81	15	0	0	0	0	0	11	113	125	139
Cheshunt GPs:
Herts:	143	81	2	0	0	0	0	0	11	113	120	129
Herts:
Bowyers Water	140	81	2	0	nc	0	0	nc	11	113	120	125
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	2	0	0	0	0	0	0	0	0	0	0	4
Slipe Lane Lake	1	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	0	0	0	0	0	0	0	0	0	0	2	0
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	0	nc	0	0	0	0	0	nc	nc	0	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	2	0
Essex:	0	0	13	0	0	0	0	0	0	0	3	10
Essex:
Hall Marsh Scrape	0	nc	13	0	0	0	0	nc	nc	0	3	10
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	0	8	0	0	0	0	0	0	0	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	0	0	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	0	4	0	0	0	0	0	0	0	0	0	0
Aldenham Reservoir	126	148	nc	nc	nc	nc	nc	nc	2	104	59	0
Hilfield Park Reservoir	262	69	122	0	0	0	nc	nc	nc	nc	nc	nc
Tring Reservoirs	224	289	31	0	0	0	0	3	0	87	145	245

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	120	407	60	18	10	49	57	67	44	70	101	200
Colne Valley:
Hampermill Lake	nc	19	4	2	3	0	0	0	nc	0	0	2
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	11	0	5	2	2	2	2	15	5	0	16	13
Maple Lodge NR	0	0	5	8	2	35	35	19	4	0	9	22
Lynsters Lake	15	1	11	2	0	0	0	0	0	0	14	60
Pynesfield North/South Lakes	64	31	12	3	0	0	0	0	0	0	11	41
Helicon Lake	28	40	1	0	0	0	0	0	0	0	0	22
Troy Mill Lake	2	316	22	1	3	12	20	33	35	70	51	40
Lea Valley:	722	507	373	109	58	50	167	99	485	604	670	505
Lea Valley:
East Hyde	14	30	14	8	3	3	1	1	4	6	16	16
Brocket Park	0	3	0	0	0	0	0	0	0	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	3	9	21	19	28	26	3	15	11	17	15	22
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	2	nc	nc	nc	0
Amwell NR - others	116	219	12	31	20	0	27	22	32	105	206	103
Stanstead Abbotts Lakes - N lake	103	7	6	nc	nc	nc	nc	nc	25	25	49	114
Rye Meads	95	81	199	nc	nc	nc	nc	nc	365	324	233	104
Broxbourne GP	63	62	53	28	2	1	0	nc	2	33	38	26
Cheshunt GPs:	328	96	68	23	5	20	136	59	46	94	113	120
Cheshunt GPs:
Herts:	309	96	39	7	3	1	19	15	19	53	52	54
Herts:
Bowyers Water	178	49	20	4	nc	0	2	nc	2	42	45	32
Cheshunt Lake	45	12	0	0	0	0	0	0	0	0	0	0
Northmet Lake	8	2	2	0	0	1	4	10	8	2	0	7
Slipe Lane Lake	10	13	2	0	1	0	0	0	0	0	0	0
Turnford Lakes	11	20	2	3	2	0	6	0	2	7	5	15
ex-Herts:	19	0	4	9	2	19	104	44	27	41	56	47
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	10	nc
Hooks Marsh GP	9	nc	0	1	0	0	13	nc	nc	8	0	5
Met Police Pit	nc	nc	4	0	nc	nc	nc	nc	0	2	4	nc
Seventy Acres Lake	10	0	0	8	2	19	91	44	27	31	42	42
Essex:	0	0	25	7	0	0	13	0	0	0	5	19
Essex:
Hall Marsh Scrape	0	nc	25	7	0	0	13	nc	nc	0	5	19
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	2	3	0	0	nc	0	7	0	1
Panshanger Park	40	86	6	22	14	20	0	12	26	nc	nc	136
Fairlands Valley Park	0	0	0	1	0	0	0	0	0	nc	0	nc
Verulamium Park	1	0	0	0	0	0	nc	0	3	0	nc	8
Tyttenhanger GPs - all	0	0	2	8	2	5	4	4	0	0	0	2
Aldenham Reservoir	102	190	nc	nc	nc	nc	nc	nc	33	90	20	6
Hilfield Park Reservoir	182	116	40	30	3	16	nc	nc	nc	nc	nc	nc
Tring Reservoirs	51	15	9	26	4	4	3	3	9	17	24	47

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	14	1	21	44	0	0	1	0	20	20	6	9
Colne Valley:
Hampermill Lake	nc	1	0	0	0	0	0	0	nc	0	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	2	0	0	0	0	0	0	0	0	0	0	0
Maple Lodge NR	12	0	21	44	0	0	1	0	20	20	6	9
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:	167	77	88	13	0	1	0	1	98	156	180	216
Lea Valley:
East Hyde	9	20	6	4	0	0	0	0	0	0	6	24
Brocket Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	16	2	2	4	0	1	0	0	48	87	54	12
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	0
Amwell NR - others	25	6	14	4	0	0	0	1	1	7	3	5
Stanstead Abbotts Lakes - N lake	13	0	10	nc	nc	nc	nc	nc	0	0	1	0
Rye Meads	88	42	51	nc	nc	nc	nc	nc	46	60	104	163
Broxbourne GP	0	0	0	1	0	0	0	nc	0	0	0	0
Cheshunt GPs:	16	7	5	0	0	0	0	0	3	2	12	12
Cheshunt GPs:
Herts:	1	4	3	0	0	0	0	0	0	1	0	5
Herts:
Bowyers Water	1	0	3	0	nc	0	0	nc	0	0	0	1
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	4
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	4	0	0	0	0	0	0	0	0	0	0
ex-Herts:	15	3	2	0	0	0	0	0	3	0	6	0
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	0	nc	0	0	0	0	0	nc	nc	0	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Seventy Acres Lake	15	3	2	0	0	0	0	0	3	0	6	0
Essex:	0	0	0	0	0	0	0	0	0	1	6	7
Essex:
Hall Marsh Scrape	0	nc	0	0	0	0	0	nc	nc	1	6	7
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	10	4	2	0	0	0	0	0	0	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	0	0	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	5	16	6	6	0	0	0	2	1	2	1	12
Aldenham Reservoir	0	0	nc	nc	nc	nc	nc	nc	0	0	0	0
Hilfield Park Reservoir	1	0	0	2	0	0	nc	nc	nc	nc	nc	nc
Tring Reservoirs	567	477	68	16	0	2	19	54	140	0	334	355

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	158	104	238	173	155	93	164	156	208	92	154	155
Colne Valley:
Hampermill Lake	nc	14	32	30	47	23	38	34	nc	5	0	1
Batchworth Lake	61	0	55	47	25	30	62	40	66	26	51	45
Stocker's and Bury Lakes	52	54	97	55	52	12	34	37	48	37	61	64
Maple Lodge NR	8	0	22	17	15	12	15	17	37	16	10	12
Lynsters Lake	8	3	9	7	0	0	0	4	7	0	22	14
Pynesfield North/South Lakes	7	9	10	4	6	4	0	7	8	5	4	3
Helicon Lake	6	4	5	11	6	0	2	4	38	2	4	5
Troy Mill Lake	16	20	8	2	4	12	13	13	4	1	2	11
Lea Valley:	578	483	541	282	152	192	479	352	445	559	621	449
Lea Valley:
East Hyde	35	10	12	10	6	6	17	20	20	35	62	32
Brocket Park	6	3	3	8	9	8	6	29	18	nc	6	nc
Stanborough Lakes North	nc	81	112	57	nc	nc	nc	nc	nc	72	nc	nc
Stanborough Lakes South	nc	nc	nc	17	0	nc	37	nc	nc	nc	25	nc
King's Meads	30	34	18	28	10	24	16	61	19	12	10	10
Amwell GP - Ware / Thrift GP	nc	Present	nc	5	3	0	nc	10	nc	nc	nc	1
Amwell NR - others	93	72	26	16	14	20	46	20	42	75	125	108
Stanstead Abbotts Lakes - N lake	9	31	34	nc	nc	nc	nc	nc	28	3	25	25
Rye Meads	60	58	71	nc	nc	nc	nc	nc	153	63	107	60
Broxbourne GP	10	12	23	10	12	2	20	nc	7	15	11	14
Cheshunt GPs:	335	182	242	131	98	132	337	212	158	284	250	199
Cheshunt GPs:
Herts:	191	127	161	47	59	91	227	138	108	201	167	106
Herts:
Bowyers Water	15	30	8	10	nc	9	50	nc	18	15	12	26
Cheshunt Lake	20	18	9	9	11	9	5	8	13	40	13	0
Northmet Lake	54	43	46	20	17	45	58	59	22	75	65	66
Slipe Lane Lake	12	5	5	5	4	2	10	2	6	1	3	5
Turnford Lakes	12	7	15	3	8	2	4	5	18	7	4	9
ex-Herts:	100	55	65	74	31	31	107	74	50	83	81	71
ex-Herts:
Friday Lake	nc	nc	0	2	nc	nc	nc	nc	0	2	6	nc
Hooks Marsh GP	17	nc	14	6	7	1	9	nc	nc	17	10	8
Met Police Pit	nc	nc	8	7	nc	nc	nc	nc	0	4	2	nc
Seventy Acres Lake	83	55	43	59	24	30	98	74	50	60	63	63
Essex:	44	0	16	10	8	10	3	0	0	0	2	22
Essex:
Hall Marsh Scrape	44	nc	16	10	8	10	3	nc	nc	0	2	22
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	38	nc	44	35	41	63	nc	91	66	77	39
Panshanger Park	84	80	86	102	88	52	132	300	300	nc	nc	185
Fairlands Valley Park	204	325	126	93	126	123	127	164	247	nc	240	nc
Verulamium Park	146	154	134	148	148	170	nc	168	184	162	nc	212
Tyttenhanger GPs - all	19	84	29	20	31	24	26	45	21	53	90	94
Aldenham Reservoir	61	92	nc	nc	nc	nc	nc	nc	90	57	56	46
Hilfield Park Reservoir	11	14	11	15	13	10	nc	nc	nc	nc	nc	nc
Tring Reservoirs	98	98	79	60	66	124	0	133	113	179	108	55

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	101	89	34	17	1	8	3	6	8	47	30	52
Colne Valley:
Hampermill Lake	nc	0	3	0	0	0	0	0	nc	0	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	4
Stocker's and Bury Lakes	101	77	22	2	0	0	0	0	0	8	29	42
Maple Lodge NR	0	0	9	15	0	8	3	6	8	0	1	5
Lynsters Lake	0	2	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	10	0	0	1	0	0	0	0	39	0	1
Lea Valley:	216	313	163	11	1	2	2	15	143	219	188	122
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	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	0	0	0	0	0	2	0	2	26	23	27	13
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	0
Amwell NR - others	33	44	38	2	1	0	1	7	4	21	28	7
Stanstead Abbotts Lakes - N lake	15	16	23	nc	nc	nc	nc	nc	1	0	7	5
Rye Meads	30	36	51	nc	nc	nc	nc	nc	35	97	70	55
Broxbourne GP	0	0	0	0	0	0	0	nc	0	0	1	2
Cheshunt GPs:	138	217	51	9	0	0	1	6	77	78	55	40
Cheshunt GPs:
Herts:	122	88	10	0	0	0	1	0	56	41	37	23
Herts:
Bowyers Water	37	3	0	0	nc	0	0	nc	52	38	33	8
Cheshunt Lake	12	0	0	0	0	0	0	0	0	0	1	0
Northmet Lake	8	16	2	0	0	0	1	0	1	0	3	6
Slipe Lane Lake	18	49	3	0	0	0	0	0	0	1	0	8
Turnford Lakes	0	0	0	0	0	0	0	0	0	2	0	1
ex-Herts:	16	129	34	7	0	0	0	6	21	25	5	6
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	4	nc	0	0	0	0	0	nc	nc	1	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	1	nc
Seventy Acres Lake	12	129	34	7	0	0	0	6	21	24	4	6
Essex:	0	0	7	2	0	0	0	0	0	12	13	11
Essex:
Hall Marsh Scrape	0	nc	7	2	0	0	0	nc	nc	12	13	11
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	8	2	0	0	0	0	0	0	0	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	9	14	1	0	0	0	nc	1	0	2	nc	6
Tyttenhanger GPs - all	0	0	3	14	0	0	0	0	0	1	1	6
Aldenham Reservoir	0	0	nc	nc	nc	nc	nc	nc	16	12	4	2
Hilfield Park Reservoir	7	2	22	5	0	0	nc	nc	nc	nc	nc	nc
Tring Reservoirs	0	27	31	7	2	6	18	23	88	77	56	91

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	59	38	21	20	20	12	5	5	5	41	94	48
Colne Valley:
Hampermill Lake	nc	0	0	0	0	0	0	0	nc	0	0	0
Batchworth Lake	3	0	0	1	0	1	0	0	0	0	0	0
Stocker's and Bury Lakes	45	10	17	19	14	4	2	5	2	39	74	31
Maple Lodge NR	0	0	3	0	4	6	3	0	0	2	1	2
Lynsters Lake	10	0	0	0	0	0	0	0	3	0	3	0
Pynesfield North/South Lakes	1	7	0	0	0	1	0	0	0	0	3	5
Helicon Lake	0	6	0	0	0	0	0	0	0	0	1	0
Troy Mill Lake	0	15	1	0	2	0	0	0	0	0	12	10
Lea Valley:	141	94	88	27	12	11	13	17	32	36	101	135
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	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	0	0	0	0	0	8	1	1	0	0	1	15
Amwell GP - Ware / Thrift GP	nc	Present	nc	0	1	0	nc	0	nc	nc	nc	9
Amwell NR - others	62	29	22	11	5	0	7	4	11	7	28	41
Stanstead Abbotts Lakes - N lake	12	0	4	nc	nc	nc	nc	nc	11	10	21	16
Rye Meads	11	26	25	nc	nc	nc	nc	nc	0	0	1	8
Broxbourne GP	6	13	0	0	0	0	0	nc	0	9	21	19
Cheshunt GPs:	50	26	37	16	6	3	5	12	10	10	29	27
Cheshunt GPs:
Herts:	30	17	8	0	0	0	0	0	10	1	14	18
Herts:
Bowyers Water	12	14	1	0	nc	0	0	nc	9	0	10	18
Cheshunt Lake	15	1	2	0	0	0	0	0	0	0	2	0
Northmet Lake	3	2	5	0	0	0	0	0	1	1	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:	20	9	29	16	6	3	5	12	0	9	15	9
ex-Herts:
Friday Lake	nc	nc	6	0	nc	nc	nc	nc	0	0	2	nc
Hooks Marsh GP	4	nc	0	1	1	0	0	nc	nc	0	3	1
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Seventy Acres Lake	16	9	23	15	5	3	5	12	0	9	10	8
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	nc	0	0	0	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	1	16	3	0	2	8	6	4	3	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	3	7	0	0	0	0	nc	0	0	1	nc	0
Tyttenhanger GPs - all	2	0	5	0	0	3	0	3	0	0	2	0
Aldenham Reservoir	0	33	nc	nc	nc	nc	nc	nc	0	3	157	105
Hilfield Park Reservoir	133	59	12	0	0	11	nc	nc	nc	nc	nc	nc
Tring Reservoirs	73	143	34	6	4	6	7	21	44	92	45	210

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	291	398	319	170	114	139	84	142	149	204	409	464
Colne Valley:
Hampermill Lake	nc	0	19	7	8	9	2	4	nc	0	6	12
Batchworth Lake	48	8	26	13	9	21	17	1	26	15	9	16
Stocker's and Bury Lakes	104	66	122	72	59	46	36	103	52	86	263	213
Maple Lodge NR	0	0	6	8	16	28	10	6	7	6	21	12
Lynsters Lake	68	9	42	29	2	6	1	19	29	20	24	69
Pynesfield North/South Lakes	47	42	28	7	1	23	7	0	4	8	45	79
Helicon Lake	24	93	34	13	16	2	0	9	1	7	20	31
Troy Mill Lake	0	180	42	21	3	4	11	0	30	62	21	32
Lea Valley:	1268	738	948	487	169	113	237	335	562	769	1034	711
Lea Valley:
East Hyde	4	1	0	0	0	3	0	0	0	0	0	0
Brocket Park	2	11	4	6	7	1	0	0	0	nc	12	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	1	6	5	3	15	12	6	5	3	1	1	11
Amwell GP - Ware / Thrift GP	nc	Present	nc	78	24	21	nc	47	nc	nc	nc	48
Amwell NR - others	129	97	92	109	66	14	18	49	29	60	88	99
Stanstead Abbotts Lakes - N lake	97	28	71	nc	nc	nc	nc	nc	58	76	87	61
Rye Meads	127	101	104	nc	nc	nc	nc	nc	162	94	115	120
Broxbourne GP	111	59	79	85	11	20	22	nc	55	73	101	39
Cheshunt GPs:	797	435	593	206	46	42	191	234	255	465	630	333
Cheshunt GPs:
Herts:	703	397	418	106	23	16	82	133	195	307	428	203
Herts:
Bowyers Water	100	85	65	32	nc	2	5	nc	28	33	67	37
Cheshunt Lake	72	32	17	2	0	0	0	0	0	0	3	1
Northmet Lake	178	119	114	62	4	7	23	73	37	87	103	79
Slipe Lane Lake	141	83	46	10	2	0	3	2	3	31	90	44
Turnford Lakes	41	1	17	0	0	1	1	0	1	10	18	42
ex-Herts:	90	38	175	95	19	26	109	101	60	158	200	130
ex-Herts:
Friday Lake	nc	nc	48	26	nc	nc	nc	nc	0	9	31	nc
Hooks Marsh GP	28	nc	30	13	2	4	30	nc	nc	27	22	36
Met Police Pit	nc	nc	6	0	nc	nc	nc	nc	14	51	68	nc
Seventy Acres Lake	62	38	91	56	17	22	79	101	46	71	79	94
Essex:	4	0	0	5	4	0	0	0	0	0	2	0
Essex:
Hall Marsh Scrape	4	nc	0	5	4	0	0	nc	nc	0	2	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	4	0	0	nc	0	1	0	0
Panshanger Park	58	82	61	54	46	66	36	66	24	nc	nc	37
Fairlands Valley Park	0	0	0	0	0	2	1	0	0	nc	0	nc
Verulamium Park	3	4	30	18	18	20	nc	11	8	3	nc	1
Tyttenhanger GPs - all	21	0	21	0	10	22	9	8	1	0	0	10
Aldenham Reservoir	101	92	nc	nc	nc	nc	nc	nc	30	59	116	37
Hilfield Park Reservoir	289	70	138	182	11	42	nc	nc	nc	nc	nc	nc
Tring Reservoirs	95	133	190	181	34	39	52	78	103	344	234	179

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	9	1	2	2	0	1	0	0	0	0	8	14
Colne Valley:
Hampermill Lake	nc	0	0	0	0	0	0	0	nc	0	0	0
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	9	0	2	2	0	1	0	0	0	0	8	13
Maple Lodge NR	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	0
Troy Mill Lake	0	1	0	0	0	0	0	0	0	0	0	1
Lea Valley:	10	10	8	4	0	0	0	0	0	0	1	6
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	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	0
Amwell NR - others	5	5	3	3	0	0	0	0	0	0	0	3
Stanstead Abbotts Lakes - N lake	0	0	0	nc	nc	nc	nc	nc	0	0	1	0
Rye Meads	0	0	0	nc	nc	nc	nc	nc	0	0	0	0
Broxbourne GP	0	0	0	0	0	0	0	nc	0	0	0	0
Cheshunt GPs:	5	5	5	1	0	0	0	0	0	0	0	3
Cheshunt GPs:
Herts:	5	5	5	1	0	0	0	0	0	0	0	3
Herts:
Bowyers Water	4	1	1	0	nc	0	0	nc	0	0	0	2
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	1	4	2	1	0	0	0	0	0	0	0	1
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	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	0	nc	0	0	0	0	0	nc	nc	0	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
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	nc	0	0	0	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	0	0	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	0	0	0	0	0
Aldenham Reservoir	0	0	nc	nc	nc	nc	nc	nc	0	0	0	0
Hilfield Park Reservoir	2	0	1	0	0	0	nc	nc	nc	nc	nc	nc
Tring Reservoirs	7	3	2	0	0	0	0	0	0	2	5	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	0	0	0	0	0	0	0	nc	0	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	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:	0	0	0	0	0	0	0	0	0	0	0	0
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	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	0	0	0	0	nc	0	0	0	0
Cheshunt GPs:	0	0	0	0	0	0	0	0	0	0	0	0
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	0	0	0
Herts:
Bowyers Water	0	0	0	0	nc	0	0	nc	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:	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	0	nc	0	0	0	0	0	nc	nc	0	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	0	0	nc
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	nc	0	0	0	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	0	nc	nc	0
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	0	0	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	0	0	0	0	0	0	0	0	0	0	0	0
Aldenham Reservoir	0	0	nc	nc	nc	nc	nc	nc	0	0	0	0
Hilfield Park Reservoir	3	2	2	1	1	1	nc	nc	nc	nc	nc	nc
Tring Reservoirs	0	0	0	0	0	0	0	0	0	0	0	0

Little GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	0	1	11	8	7	5	6	7	2	8	3	1
Colne Valley:
Hampermill Lake	nc	0	0	0	0	0	0	0	nc	0	0	0
Batchworth Lake	0	1	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	0	0	0	0	0	0	0	0	0	1	0	0
Maple Lodge NR	0	0	11	8	7	5	6	7	2	7	3	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	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:	29	23	24	4	6	6	5	7	48	40	44	35
Lea Valley:
East Hyde	6	2	2	2	2	2	2	2	4	4	4	2
Brocket Park	3	2	2	2	0	3	1	1	3	nc	4	nc
Stanborough Lakes North	nc	0	0	0	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	1	0	0	0	2	1	2	4	0	0	2	1
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	0
Amwell NR - others	0	2	0	0	0	0	0	0	0	1	0	0
Stanstead Abbotts Lakes - N lake	1	3	1	nc	nc	nc	nc	nc	0	1	1	1
Rye Meads	14	11	16	nc	nc	nc	nc	nc	38	29	32	20
Broxbourne GP	0	0	0	0	0	0	0	nc	0	0	1	2
Cheshunt GPs:	4	3	3	0	2	0	0	0	3	5	0	9
Cheshunt GPs:
Herts:	0	1	1	0	0	0	0	0	3	2	0	1
Herts:
Bowyers Water	0	0	0	0	nc	0	0	nc	3	1	0	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	1	0	0	0	0	0	0	1	0	0
Slipe Lane Lake	0	1	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	4	2	2	0	0	0	0	0	0	3	0	8
ex-Herts:
Friday Lake	nc	nc	1	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	0	nc	0	0	0	0	0	nc	nc	0	0	0
Met Police Pit	nc	nc	0	0	nc	nc	nc	nc	0	2	0	nc
Seventy Acres Lake	4	2	1	0	0	0	0	0	0	1	0	8
Essex:	0	0	0	0	2	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	nc	0	0	2	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	1	0
Panshanger Park	18	8	5	4	2	4	7	10	17	nc	nc	14
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	2	8	4	0	nc	0	6	0	nc	0
Tyttenhanger GPs - all	0	0	1	0	0	0	0	0	0	0	0	0
Aldenham Reservoir	1	0	nc	nc	nc	nc	nc	nc	1	0	0	0
Hilfield Park Reservoir	9	19	18	12	4	4	nc	nc	nc	nc	nc	nc
Tring Reservoirs	2	0	0	0	1	2	1	2	0	2	0	2

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	26	21	60	66	58	72	60	89	53	70	59	26
Colne Valley:
Hampermill Lake	nc	0	21	24	30	21	14	21	nc	30	23	5
Batchworth Lake	5	1	2	4	4	4	4	4	3	12	13	8
Stocker's and Bury Lakes	6	3	10	14	11	22	22	36	31	9	10	4
Maple Lodge NR	0	0	0	0	0	2	0	0	0	0	0	0
Lynsters Lake	3	0	6	6	0	8	6	10	7	3	4	1
Pynesfield North/South Lakes	5	8	7	8	4	6	6	8	4	5	4	2
Helicon Lake	2	3	2	2	0	0	2	2	1	4	1	2
Troy Mill Lake	5	6	12	8	9	9	6	8	7	7	4	4
Lea Valley:	32	20	57	47	31	37	48	35	68	63	43	21
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
Brocket Park	0	0	2	3	4	2	2	1	1	nc	0	nc
Stanborough Lakes North	nc	0	0	1	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	1	0	nc	2	nc	nc	nc	1	nc
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	nc	Present	nc	2	1	3	nc	0	nc	nc	nc	2
Amwell NR - others	7	0	5	4	4	3	4	6	5	4	4	2
Stanstead Abbotts Lakes - N lake	0	0	5	nc	nc	nc	nc	nc	13	8	5	3
Rye Meads	0	0	4	nc	nc	nc	nc	nc	4	3	1	0
Broxbourne GP	6	3	3	8	1	2	0	nc	8	1	4	3
Cheshunt GPs:	19	17	38	28	21	27	40	28	37	47	28	11
Cheshunt GPs:
Herts:	11	12	26	12	14	20	28	17	25	36	11	2
Herts:
Bowyers Water	1	0	3	4	nc	5	7	nc	7	11	3	1
Cheshunt Lake	0	0	0	1	3	0	0	1	1	1	1	1
Northmet Lake	3	3	12	7	5	7	6	5	6	12	1	0
Slipe Lane Lake	0	0	0	0	1	2	4	3	1	2	2	0
Turnford Lakes	0	0	0	0	0	1	1	2	0	2	0	0
ex-Herts:	8	5	12	16	7	7	12	11	12	11	17	9
ex-Herts:
Friday Lake	nc	nc	2	1	nc	nc	nc	nc	0	0	1	nc
Hooks Marsh GP	3	nc	3	5	3	2	0	nc	nc	4	2	1
Met Police Pit	nc	nc	2	1	nc	nc	nc	nc	4	2	2	nc
Seventy Acres Lake	5	5	5	9	4	5	12	11	8	5	12	8
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	nc	0	0	0	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	4	4	4	9	10	10	17	11	12	nc	nc	0
Fairlands Valley Park	0	0	1	3	0	0	0	0	0	nc	0	nc
Verulamium Park	0	0	1	0	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	17	0	22	29	17	11	19	14	16	29	30	13
Aldenham Reservoir	4	7	nc	nc	nc	nc	nc	nc	20	38	20	5
Hilfield Park Reservoir	52	12	24	20	10	13	nc	nc	nc	nc	nc	nc
Tring Reservoirs	19	28	0	26	18	19	21	27	38	32	31	21

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	32	44	8	14	14	8	22	34	22	45	49	48
Colne Valley:
Hampermill Lake	nc	0	0	1	5	0	0	1	nc	2	1	3
Batchworth Lake	4	3	0	0	0	2	1	0	7	7	6	1
Stocker's and Bury Lakes	14	30	4	4	5	3	16	28	11	24	36	27
Maple Lodge NR	0	0	0	1	1	0	2	1	1	1	0	1
Lynsters Lake	4	1	0	1	2	0	0	0	1	1	3	0
Pynesfield North/South Lakes	2	2	2	0	0	0	0	0	0	0	0	2
Helicon Lake	7	2	1	1	0	1	1	0	1	1	0	4
Troy Mill Lake	1	6	1	6	1	2	2	4	1	9	3	10
Lea Valley:	129	75	82	47	53	75	42	60	111	92	128	113
Lea Valley:
East Hyde	2	10	2	2	2	1	2	2	2	1	2	2
Brocket Park	11	8	4	0	0	3	7	8	10	nc	15	nc
Stanborough Lakes North	nc	0	0	1	nc	nc	nc	nc	nc	0	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	2	nc	nc	nc	3	nc
King's Meads	10	0	0	2	5	1	0	1	6	2	1	1
Amwell GP - Ware / Thrift GP	nc	0	nc	0	0	0	nc	0	nc	nc	nc	3
Amwell NR - others	29	18	31	31	35	52	12	16	12	7	9	4
Stanstead Abbotts Lakes - N lake	5	0	0	nc	nc	nc	nc	nc	9	8	11	20
Rye Meads	5	4	1	nc	nc	nc	nc	nc	37	25	20	3
Broxbourne GP	8	7	10	1	6	7	6	nc	3	4	3	3
Cheshunt GPs:	59	28	34	10	5	11	13	33	32	45	64	77
Cheshunt GPs:
Herts:	39	21	20	4	1	6	5	20	22	10	30	14
Herts:
Bowyers Water	0	0	1	1	nc	0	0	nc	3	4	3	1
Cheshunt Lake	6	2	2	2	0	0	0	0	0	0	2	0
Northmet Lake	4	11	6	1	0	2	3	8	8	3	15	5
Slipe Lane Lake	5	1	1	0	0	0	0	0	1	1	0	2
Turnford Lakes	11	2	0	0	1	1	1	3	0	0	1	6
ex-Herts:	20	7	14	6	4	5	8	13	10	35	34	63
ex-Herts:
Friday Lake	nc	nc	1	0	nc	nc	nc	nc	0	0	0	nc
Hooks Marsh GP	8	nc	1	3	1	1	5	nc	nc	14	3	13
Met Police Pit	nc	nc	3	0	nc	nc	nc	nc	0	4	1	nc
Seventy Acres Lake	12	7	9	3	3	4	3	13	10	17	30	50
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	nc	0	0	0	0	0	nc	nc	0	0	0
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	0	0	0	0	nc	0	0	0	0
Panshanger Park	4	2	2	3	4	6	0	6	12	nc	nc	5
Fairlands Valley Park	2	0	0	4	8	0	0	0	4	nc	2	nc
Verulamium Park	0	0	0	1	0	0	nc	0	0	0	nc	0
Tyttenhanger GPs - all	8	0	11	6	4	3	7	1	5	4	3	12
Aldenham Reservoir	10	1	nc	nc	nc	nc	nc	nc	7	11	11	8
Hilfield Park Reservoir	8	0	1	0	0	0	nc	nc	nc	nc	nc	nc
Tring Reservoirs	26	14	32	20	29	23	34	31	29	12	0	15

Grey HeronTop of page

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

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	90	68	99	44	26	25	46	45	29	58	69	57
Colne Valley:
Hampermill Lake	nc	34	40	11	7	3	10	18	nc	19	22	25
Batchworth Lake	9	2	7	5	4	1	5	4	11	7	11	9
Stocker's and Bury Lakes	31	11	24	3	3	6	4	9	7	5	19	10
Maple Lodge NR	24	4	15	17	11	9	20	11	7	22	6	4
Lynsters Lake	14	3	4	0	0	0	0	0	0	0	4	2
Pynesfield North/South Lakes	10	4	3	4	0	0	2	1	0	1	2	1
Helicon Lake	0	3	2	3	0	4	0	0	0	0	3	4
Troy Mill Lake	2	7	4	1	1	2	5	2	4	4	2	2
Lea Valley:	157	144	225	89	56	28	53	57	273	177	171	113
Lea Valley:
East Hyde	40	20	17	12	8	8	12	12	14	12	12	12
Brocket Park	12	18	14	11	4	5	3	7	9	nc	15	nc
Stanborough Lakes North	nc	3	6	3	nc	nc	nc	nc	nc	10	nc	nc
Stanborough Lakes South	nc	nc	nc	5	10	nc	2	nc	nc	nc	13	nc
King's Meads	11	14	23	24	2	1	8	22	40	23	18	7
Amwell GP - Ware / Thrift GP	nc	Present	nc	2	1	0	nc	0	nc	nc	nc	2
Amwell NR - others	14	9	21	14	9	6	7	9	31	23	13	7
Stanstead Abbotts Lakes - N lake	2	1	9	nc	nc	nc	nc	nc	10	6	6	7
Rye Meads	40	45	55	nc	nc	nc	nc	nc	144	69	50	37
Broxbourne GP	6	6	2	4	10	4	7	nc	2	2	3	8
Cheshunt GPs:	32	28	78	14	12	4	14	7	23	32	41	33
Cheshunt GPs:
Herts:	22	17	30	3	4	2	8	1	14	21	17	22
Herts:
Bowyers Water	5	3	9	2	nc	0	2	nc	10	17	8	0
Cheshunt Lake	6	6	2	0	2	0	1	1	2	2	2	8
Northmet Lake	2	1	5	0	2	1	3	0	1	1	2	2
Slipe Lane Lake	2	1	3	0	0	1	1	0	0	0	1	11
Turnford Lakes	3	2	3	1	0	0	1	0	0	1	1	1
ex-Herts:	6	11	30	8	5	1	4	6	9	7	17	9
ex-Herts:
Friday Lake	nc	nc	0	0	nc	nc	nc	nc	2	0	2	nc
Hooks Marsh GP	1	nc	13	3	1	0	0	nc	nc	0	1	2
Met Police Pit	nc	nc	4	2	nc	nc	nc	nc	1	2	7	nc
Seventy Acres Lake	5	11	13	3	4	1	4	6	6	5	7	7
Essex:	4	0	18	3	3	1	2	0	0	4	7	2
Essex:
Hall Marsh Scrape	4	nc	18	3	3	1	2	nc	nc	4	7	2
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	4	nc	3	2	1	2	nc	0	1	2	2
Panshanger Park	4	3	11	16	6	4	8	7	11	nc	nc	3
Fairlands Valley Park	21	35	23	17	10	14	24	28	48	nc	47	nc
Verulamium Park	38	42	28	14	7	11	nc	12	26	30	nc	24
Tyttenhanger GPs - all	12	6	23	12	3	3	7	7	14	30	47	26
Aldenham Reservoir	28	40	nc	nc	nc	nc	nc	nc	29	39	25	12
Hilfield Park Reservoir	5	6	5	11	2	2	nc	nc	nc	nc	nc	nc
Tring Reservoirs	31	44	21	14	18	33	22	44	29	39	32	8

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	945	970	659	422	288	292	358	603	863	914	1015	1444
Colne Valley:
Hampermill Lake	nc	48	62	53	43	20	34	24	nc	15	20	18
Batchworth Lake	95	2	47	39	25	29	27	32	26	22	18	22
Stocker's and Bury Lakes	181	185	119	93	37	77	64	58	117	118	156	287
Maple Lodge NR	3	0	33	21	11	13	21	25	33	24	24	21
Lynsters Lake	221	216	102	46	45	22	28	32	60	74	97	195
Pynesfield North/South Lakes	149	108	71	46	49	29	29	43	48	56	59	102
Helicon Lake	113	125	58	33	21	22	23	29	40	53	73	71
Troy Mill Lake	183	286	167	91	57	80	132	360	539	552	568	728
Lea Valley:	2338	2036	1588	768	570	580	689	661	1904	1984	2352	2095
Lea Valley:
East Hyde	11	10	10	10	10	8	10	12	10	10	11	10
Brocket Park	61	42	32	35	22	20	26	14	23	nc	37	nc
Stanborough Lakes North	nc	3	9	16	nc	nc	nc	nc	nc	13	nc	nc
Stanborough Lakes South	nc	nc	nc	0	0	nc	0	nc	nc	nc	0	nc
King's Meads	10	11	27	24	22	24	28	32	56	13	17	28
Amwell GP - Ware / Thrift GP	nc	Present	nc	36	20	14	nc	37	nc	nc	nc	58
Amwell NR - others	607	562	193	147	96	101	134	232	386	420	405	576
Stanstead Abbotts Lakes - N lake	139	198	79	nc	nc	nc	nc	nc	81	112	167	176
Rye Meads	182	133	174	nc	nc	nc	nc	nc	548	378	404	267
Broxbourne GP	207	176	172	104	65	70	65	nc	121	176	191	187
Cheshunt GPs:	1121	901	892	396	335	343	426	334	679	862	1120	793
Cheshunt GPs:
Herts:	791	770	537	176	217	209	269	174	446	520	709	446
Herts:
Bowyers Water	174	257	129	46	nc	83	104	nc	224	297	331	254
Cheshunt Lake	5	30	12	6	4	2	3	1	0	4	5	4
Northmet Lake	143	102	84	54	40	30	41	30	42	33	72	77
Slipe Lane Lake	55	76	67	51	59	21	18	29	55	46	46	78
Turnford Lakes	94	63	66	19	19	12	31	7	22	14	32	33
ex-Herts:	322	131	335	204	105	127	155	160	233	342	408	340
ex-Herts:
Friday Lake	nc	nc	17	14	nc	nc	nc	nc	0	1	36	nc
Hooks Marsh GP	113	nc	53	48	34	11	25	nc	nc	44	44	41
Met Police Pit	nc	nc	122	55	nc	nc	nc	nc	46	49	72	nc
Seventy Acres Lake	209	131	143	87	71	116	130	160	187	248	256	299
Essex:	8	0	20	16	13	7	2	0	0	0	3	7
Essex:
Hall Marsh Scrape	8	nc	20	16	13	7	2	nc	nc	0	3	7
Holyfield Marsh Lake	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc
Radwell Mill	nc	0	nc	4	2	1	2	nc	4	4	2	2
Panshanger Park	80	138	100	74	38	72	36	88	79	nc	nc	135
Fairlands Valley Park	11	13	11	15	14	15	11	19	19	nc	17	nc
Verulamium Park	85	120	109	98	85	107	nc	112	96	103	nc	86
Tyttenhanger GPs - all	88	126	79	50	48	30	66	30	50	35	65	110
Aldenham Reservoir	200	432	nc	nc	nc	nc	nc	nc	269	250	396	131
Hilfield Park Reservoir	253	238	110	102	67	139	nc	nc	nc	nc	nc	nc
Tring Reservoirs	834	787	501	201	312	333	409	354	404	844	804	585