Herts Bird Club - WeBS 2010

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 2010 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) 95% of planned Hertfordshire counts were completed. Radwell Mill was re-started as a WeBS count site in December 2010, but no counts were submitted for Aldenham Reservoir this year.

The Sunday count dates in 2010 were; 17 Jan, 21 Feb, 14 Mar, 18 Apr, 16 May, 20 Jun, 18 Jul, 15 Aug, 19 Sep, 10 Oct, 14 Nov, and 19 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:	94	92	128	113	75	70	67	63	67	51	50	53
Colne Valley:
Hampermill Lake	0	nc	0	2	3	3	2	nc	nc	nc	nc	nc
Batchworth Lake	4	26	46	47	25	28	16	17	7	10	5	2
Stocker's and Bury Lakes	65	54	56	50	38	29	39	35	48	33	34	46
Maple Lodge	2	0	2	2	0	1	2	2	2	2	2	0
Lynsters Lake	10	0	12	4	2	2	2	0	0	2	0	nc
Pynesfield North/South Lakes	3	7	5	6	4	4	4	2	2	2	2	0
Helicon Lake	2	0	2	0	1	1	0	0	5	0	5	2
Troy Mill Lake	8	5	5	2	2	2	2	7	3	2	2	3
Lea Valley:	124	117	109	52	39	92	101	110	93	125	136	100
Lea Valley:
East Hyde	4	4	4	4	4	4	2	2	5	3	2	3
King's Meads	1	7	9	4	3	3	1	1	6	5	5	2
Amwell GP - Ware / Thrift GP	0	0	3	1	nc	2	0	2	0	nc	3	nc
Amwell NR - others	18	16	11	4	3	5	11	12	8	9	18	10
Stanstead Abbotts Lakes - N lake	4	6	8	nc	nc	nc	nc	nc	9	1	8	6
Rye Meads	5	5	4	nc	nc	nc	nc	nc	23	17	16	17
Broxbourne GP	4	14	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	88	65	70	39	29	78	87	93	42	90	84	62
Cheshunt GPs:
Herts:	53	25	26	8	14	32	58	52	6	35	33	34
Herts:
Bowyers Water	45	14	20	5	9	26	54	47	nc	22	24	24
Cheshunt Lake	8	6	2	1	1	4	2	2	2	6	6	7
Northmet Lake	0	3	2	1	3	0	0	3	2	1	2	0
Slipe Lane Lake	0	2	2	1	1	0	2	0	2	0	0	3
Turnford Lakes	0	0	0	0	0	2	0	0	0	6	1	0
ex-Herts:	35	36	44	31	12	45	29	41	30	48	51	28
ex-Herts:
Friday Lake	nc	6	6	nc	0	3	nc	nc	nc	7	0	nc
Hooks Marsh GP	4	7	nc	6	nc	6	nc	nc	2	3	nc	nc
Met Police Pit	nc	2	0	nc	1	5	nc	nc	nc	9	2	nc
Seventy Acres Lake	31	21	38	25	11	31	29	41	28	29	49	28
Essex:	0	4	0	0	3	1	0	0	6	7	0	0
Essex:
Hall Marsh Scrape	0	1	nc	0	nc	1	nc	nc	6	7	nc	nc
Holyfield Marsh Lake	0	3	0	0	3	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	0	0	2	1	1	2	10	9	8	0	14	0
Panshanger Park	4	2	2	4	5	4	1	0	4	7	nc	nc
Fairlands Valley Park	2	2	2	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	3	3	2	2	1	0	2	2	10	11	8	9
Hilfield Park Reservoir	2	2	2	2	1	2	4	4	7	12	7	2
Tring Reservoirs	0	8	6	45	28	45	57	74	42	39	39	43

Canada GooseTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	103	148	186	186	109	165	239	153	89	108	62	253
Colne Valley:
Hampermill Lake	2	nc	48	16	4	11	59	nc	nc	nc	nc	nc
Batchworth Lake	0	19	28	13	15	11	7	0	3	23	2	0
Stocker's and Bury Lakes	99	80	75	108	76	110	168	128	84	37	40	133
Maple Lodge	0	3	7	4	4	0	0	0	0	0	0	0
Lynsters Lake	2	46	28	45	8	33	1	8	2	26	5	nc
Pynesfield North/South Lakes	0	0	0	0	2	0	0	0	0	0	0	0
Helicon Lake	0	0	0	0	0	0	4	17	0	22	15	0
Troy Mill Lake	0	0	0	0	0	0	0	0	0	0	0	120
Lea Valley:	120	369	395	260	209	447	1066	125	250	256	181	462
Lea Valley:
East Hyde	84	51	16	16	14	14	28	35	32	30	90	82
King's Meads	2	51	14	6	4	0	0	13	0	20	25	0
Amwell GP - Ware / Thrift GP	0	15	10	7	nc	27	3	2	1	nc	0	nc
Amwell NR - others	7	131	142	115	69	138	104	44	68	105	35	340
Stanstead Abbotts Lakes - N lake	0	28	37	nc	nc	nc	nc	nc	60	2	9	8
Rye Meads	0	2	9	nc	nc	nc	nc	nc	0	1	0	1
Broxbourne GP	2	26	nc	nc	nc	nc	nc	nc	nc	5	nc	16
Cheshunt GPs:	25	65	167	116	122	268	931	31	89	93	22	15
Cheshunt GPs:
Herts:	2	30	51	55	65	136	170	31	56	38	5	6
Herts:
Bowyers Water	2	12	8	11	13	54	37	7	nc	20	0	0
Cheshunt Lake	0	3	10	7	20	12	46	18	9	16	0	6
Northmet Lake	0	15	27	28	25	70	76	4	20	2	5	0
Slipe Lane Lake	0	0	2	7	6	0	11	0	0	0	0	0
Turnford Lakes	0	0	4	2	1	0	0	2	27	0	0	0
ex-Herts:	23	23	86	37	33	132	49	0	33	42	17	9
ex-Herts:
Friday Lake	nc	0	3	nc	13	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	0	14	nc	10	nc	78	nc	nc	18	23	nc	nc
Met Police Pit	nc	5	4	nc	1	33	nc	nc	nc	14	2	nc
Seventy Acres Lake	23	4	79	27	19	21	49	0	15	5	15	9
Essex:	0	12	30	24	24	0	712	0	0	13	0	0
Essex:
Hall Marsh Scrape	0	2	nc	2	nc	0	nc	nc	0	13	nc	nc
Holyfield Marsh Lake	0	10	30	22	24	nc	712	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	71	35	26	5	4	0	0	0	0	0	65	85
Panshanger Park	0	30	33	50	48	33	80	3	4	1	nc	nc
Fairlands Valley Park	71	51	44	47	42	98	125	29	58	82	40	nc
Tyttenhanger GPs - all	32	23	25	6	7	27	45	92	88	3	8	15
Hilfield Park Reservoir	0	2	7	2	2	86	91	9	105	1	0	0
Tring Reservoirs	0	11	5	9	17	31	0	59	1	23	2	1

WigeonTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	142	67	61	1	0	0	0	0	0	4	30	140
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	53	10	61	0	0	0	0	0	0	2	6	30
Maple Lodge	0	0	0	0	0	0	0	0	0	0	0	0
Lynsters Lake	19	0	0	1	0	0	0	0	0	0	0	nc
Pynesfield North/South Lakes	70	53	0	0	0	0	0	0	0	2	24	110
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	0	4	0	0	0	0	0	0	0	0	0	0
Lea Valley:	91	127	51	0	0	0	0	0	0	94	80	71
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	61	57	50	0	0	0	0	0	0	0	29	22
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	nc	0	nc
Amwell NR - others	0	0	1	0	0	0	0	0	0	12	5	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	1	0	0
Broxbourne GP	0	0	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	30	70	0	0	0	0	0	0	0	81	46	49
Cheshunt GPs:
Herts:	2	0	0	0	0	0	0	0	0	70	42	49
Herts:
Bowyers Water	2	0	0	0	0	0	0	0	nc	70	42	47
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	2
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	44	0	0	0	0	0	0	0	11	4	0
ex-Herts:
Friday Lake	nc	44	0	nc	0	0	nc	nc	nc	11	4	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Met Police Pit	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	28	26	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	28	26	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	0	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	0	0	0	0	0	0	0	0	2	4	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	0	3	0	0	0	0	0	4	5	0	18
Hilfield Park Reservoir	4	114	0	0	0	0	0	1	0	118	2	0
Tring Reservoirs	231	242	72	0	0	0	0	0	14	58	214	105

GadwallTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	173	127	4	19	16	38	117	65	27	18	64	52
Colne Valley:
Hampermill Lake	0	nc	0	2	2	0	2	nc	nc	nc	nc	nc
Batchworth Lake	2	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	73	50	1	2	0	0	8	11	6	6	19	32
Maple Lodge	0	2	2	15	11	36	104	29	0	1	5	0
Lynsters Lake	28	10	0	0	0	0	0	1	3	6	3	nc
Pynesfield North/South Lakes	24	49	0	0	1	0	0	1	18	3	33	15
Helicon Lake	0	12	1	0	0	0	0	8	0	2	4	3
Troy Mill Lake	46	4	0	0	2	2	3	15	0	0	0	2
Lea Valley:	508	546	341	98	53	102	40	108	390	452	620	757
Lea Valley:
East Hyde	32	32	16	4	2	12	4	2	10	10	10	44
King's Meads	81	34	55	30	15	23	12	23	2	0	25	5
Amwell GP - Ware / Thrift GP	4	0	0	0	nc	0	0	0	0	nc	4	nc
Amwell NR - others	34	73	27	36	25	27	0	22	33	61	146	135
Stanstead Abbotts Lakes - N lake	27	9	12	nc	nc	nc	nc	nc	56	32	31	12
Rye Meads	159	125	163	nc	nc	nc	nc	nc	279	231	225	332
Broxbourne GP	4	30	nc	nc	nc	nc	nc	nc	nc	0	nc	4
Cheshunt GPs:	167	243	68	28	11	40	24	61	10	118	179	225
Cheshunt GPs:
Herts:	138	71	28	3	7	0	15	23	6	75	121	220
Herts:
Bowyers Water	65	12	12	2	1	0	0	8	nc	55	76	188
Cheshunt Lake	59	10	0	0	2	0	0	0	0	2	25	30
Northmet Lake	2	0	2	0	4	0	15	6	5	4	14	0
Slipe Lane Lake	8	2	0	0	0	0	0	0	0	0	6	0
Turnford Lakes	4	47	14	1	0	0	0	9	1	14	0	2
ex-Herts:	6	149	40	10	4	19	9	38	4	40	58	5
ex-Herts:
Friday Lake	nc	18	0	nc	0	0	nc	nc	nc	9	8	nc
Hooks Marsh GP	0	1	nc	2	nc	0	nc	nc	4	2	nc	nc
Met Police Pit	nc	129	32	nc	0	0	nc	nc	nc	11	5	nc
Seventy Acres Lake	6	1	8	8	4	19	9	38	0	18	45	5
Essex:	23	23	0	15	0	21	0	0	0	3	0	0
Essex:
Hall Marsh Scrape	21	15	nc	15	nc	21	nc	nc	0	3	nc	nc
Holyfield Marsh Lake	2	8	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	5
Brocket Park	10	4	5	0	0	0	0	0	0	0	0	11
Panshanger Park	86	46	8	10	10	33	2	20	40	32	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	9	2	4	3	7	9	0	7	3	8	4	0
Hilfield Park Reservoir	11	34	12	37	16	20	31	9	20	11	25	16
Tring Reservoirs	6	31	21	11	6	0	7	11	Present	8	12	28

TealTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	2	4	3	3	1	0	0	10	16	8	3	4
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
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	4
Maple Lodge	2	2	3	2	0	0	0	10	8	7	3	0
Lynsters Lake	0	2	0	1	1	0	0	0	8	1	0	nc
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:	220	166	196	10	0	2	0	12	142	115	136	281
Lea Valley:
East Hyde	8	4	2	0	0	0	0	0	0	0	5	5
King's Meads	36	18	18	2	0	2	0	12	44	32	6	22
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	nc	0	nc
Amwell NR - others	30	38	10	8	0	0	0	0	3	4	8	150
Stanstead Abbotts Lakes - N lake	22	20	5	nc	nc	nc	nc	nc	4	3	0	0
Rye Meads	113	72	133	nc	nc	nc	nc	nc	86	69	112	97
Broxbourne GP	0	0	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	11	14	28	0	0	0	0	0	5	7	5	7
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	3	3	1
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	nc	3	3	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	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	0	3	0	0	0	0	0	0	0	2	6
ex-Herts:
Friday Lake	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Met Police Pit	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Seventy Acres Lake	2	0	3	0	0	0	0	0	0	0	2	6
Essex:	9	14	25	0	0	0	0	0	5	4	0	0
Essex:
Hall Marsh Scrape	9	14	nc	0	nc	0	nc	nc	5	4	nc	nc
Holyfield Marsh Lake	0	0	25	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	4	10	9	0	0	0	0	0	0	6	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	70	6	3	3	0	0	0	0	4	3	1	22
Hilfield Park Reservoir	2	0	0	2	0	0	0	0	1	5	2	0
Tring Reservoirs	134	27	6	5	0	0	3	28	274	201	377	31

MallardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	116	138	125	110	114	121	180	142	127	108	147	56
Colne Valley:
Hampermill Lake	4	nc	18	23	24	19	42	nc	nc	nc	nc	nc
Batchworth Lake	39	33	39	30	32	42	58	72	43	16	68	4
Stocker's and Bury Lakes	41	56	31	29	27	16	35	30	68	54	36	49
Maple Lodge	10	19	22	15	12	22	25	12	12	17	9	0
Lynsters Lake	7	12	8	4	3	5	6	3	1	8	2	nc
Pynesfield North/South Lakes	3	5	0	2	3	3	1	7	1	0	0	0
Helicon Lake	9	11	4	2	11	0	2	17	2	11	24	2
Troy Mill Lake	3	2	3	5	2	14	11	1	0	2	8	1
Lea Valley:	419	386	337	165	159	276	413	258	346	373	415	376
Lea Valley:
East Hyde	57	32	15	10	6	6	10	10	10	10	12	17
King's Meads	38	64	35	28	42	66	69	37	54	43	40	32
Amwell GP - Ware / Thrift GP	10	17	1	2	nc	10	5	5	6	nc	10	nc
Amwell NR - others	62	42	46	31	34	15	81	29	25	55	121	115
Stanstead Abbotts Lakes - N lake	2	6	25	nc	nc	nc	nc	nc	9	25	12	12
Rye Meads	46	55	70	nc	nc	nc	nc	nc	108	64	92	69
Broxbourne GP	17	23	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	187	147	145	94	77	179	248	177	134	176	128	131
Cheshunt GPs:
Herts:	124	106	92	51	46	97	198	111	62	89	76	39
Herts:
Bowyers Water	33	27	12	6	10	16	46	25	nc	24	22	22
Cheshunt Lake	19	18	13	3	7	22	17	10	12	9	10	9
Northmet Lake	46	57	40	30	25	46	123	56	45	42	34	2
Slipe Lane Lake	22	2	13	2	2	2	4	20	3	2	0	6
Turnford Lakes	4	2	14	10	2	11	8	0	2	12	10	0
ex-Herts:	46	29	49	39	23	58	50	66	64	72	52	92
ex-Herts:
Friday Lake	nc	2	6	nc	2	0	nc	nc	nc	5	3	nc
Hooks Marsh GP	8	9	nc	9	nc	6	nc	nc	2	11	nc	nc
Met Police Pit	nc	3	12	nc	3	2	nc	nc	nc	10	8	nc
Seventy Acres Lake	38	15	31	30	18	50	50	66	62	46	41	92
Essex:	17	12	4	4	8	24	0	0	8	15	0	0
Essex:
Hall Marsh Scrape	13	10	nc	4	nc	24	nc	nc	8	15	nc	nc
Holyfield Marsh Lake	4	2	4	0	8	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	79
Brocket Park	4	3	5	7	5	21	17	33	19	21	4	6
Panshanger Park	200	120	94	132	132	56	300	300	300	300	nc	nc
Fairlands Valley Park	185	156	132	103	88	127	243	186	265	189	306	nc
Tyttenhanger GPs - all	53	33	20	24	21	17	13	20	20	64	42	200
Hilfield Park Reservoir	3	7	8	17	26	17	14	21	2	3	6	17
Tring Reservoirs	0	50	37	112	77	88	99	152	297	121	88	70

ShovelerTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	88	163	191	6	4	2	3	8	21	10	57	110
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
Batchworth Lake	1	8	0	0	0	0	0	0	5	6	0	0
Stocker's and Bury Lakes	32	138	188	0	0	0	0	1	8	0	57	100
Maple Lodge	0	3	3	6	4	2	3	7	8	4	0	0
Lynsters Lake	0	2	0	0	0	0	0	0	0	0	0	nc
Pynesfield North/South Lakes	44	10	0	0	0	0	0	0	0	0	0	0
Helicon Lake	6	2	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	5	0	0	0	0	0	0	0	0	0	0	10
Lea Valley:	166	238	117	17	6	2	3	7	108	100	154	153
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	15	32	7	3	3	0	0	2	0	0	29	0
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	nc	9	nc
Amwell NR - others	14	39	42	14	2	2	0	4	26	18	11	22
Stanstead Abbotts Lakes - N lake	20	27	4	nc	nc	nc	nc	nc	0	4	2	0
Rye Meads	53	18	38	nc	nc	nc	nc	nc	66	51	71	85
Broxbourne GP	5	2	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	59	120	26	0	1	0	3	1	16	27	32	46
Cheshunt GPs:
Herts:	50	43	14	0	1	0	3	1	7	7	16	45
Herts:
Bowyers Water	7	14	0	0	0	0	0	1	nc	2	8	24
Cheshunt Lake	16	0	2	0	0	0	0	0	0	3	0	0
Northmet Lake	2	5	11	0	1	0	3	0	7	2	7	0
Slipe Lane Lake	10	16	0	0	0	0	0	0	0	0	1	0
Turnford Lakes	15	8	1	0	0	0	0	0	0	0	0	21
ex-Herts:	2	58	12	0	0	0	0	0	9	20	16	1
ex-Herts:
Friday Lake	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	5	0	nc	nc
Met Police Pit	nc	58	8	nc	0	0	nc	nc	nc	5	0	nc
Seventy Acres Lake	2	0	4	0	0	0	0	0	4	15	16	1
Essex:	7	19	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	7	19	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	0	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	0	0	0	0	0	0	0	0	0	0	0	0
Panshanger Park	7	6	0	0	0	0	0	0	0	0	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	2	5	13	2	0	0	0	1	0	1	0
Hilfield Park Reservoir	10	0	0	0	0	0	0	0	14	8	3	0
Tring Reservoirs	73	77	14	11	8	0	2	33	182	135	121	31

PochardTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	51	98	43	11	19	11	7	9	27	26	49	41
Colne Valley:
Hampermill Lake	0	nc	4	0	0	0	0	nc	nc	nc	nc	nc
Batchworth Lake	5	10	6	0	0	0	0	0	0	1	3	0
Stocker's and Bury Lakes	26	48	24	3	9	0	0	1	22	25	18	26
Maple Lodge	5	17	1	8	6	10	7	8	3	0	4	0
Lynsters Lake	5	4	1	0	0	0	0	0	2	0	0	nc
Pynesfield North/South Lakes	4	14	2	0	0	0	0	0	0	0	6	0
Helicon Lake	6	4	0	0	2	0	0	0	0	0	0	0
Troy Mill Lake	0	1	5	0	2	1	0	0	0	0	18	15
Lea Valley:	127	183	101	27	27	14	6	25	55	75	124	104
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	1	26	8	12	15	2	3	1	0	0	0	0
Amwell GP - Ware / Thrift GP	9	16	4	0	nc	0	0	0	10	nc	25	nc
Amwell NR - others	49	42	12	5	3	6	0	11	27	30	22	23
Stanstead Abbotts Lakes - N lake	3	21	14	nc	nc	nc	nc	nc	7	13	15	18
Rye Meads	20	12	20	nc	nc	nc	nc	nc	2	1	19	38
Broxbourne GP	1	2	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	44	64	43	10	9	6	3	13	9	31	43	25
Cheshunt GPs:
Herts:	26	19	40	0	2	1	0	3	0	15	26	13
Herts:
Bowyers Water	9	15	5	0	0	0	0	2	nc	1	10	13
Cheshunt Lake	15	0	18	0	0	0	0	0	0	12	4	0
Northmet Lake	0	4	17	0	2	1	0	1	0	2	12	0
Slipe Lane Lake	2	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:	17	42	1	9	7	5	3	10	9	16	17	12
ex-Herts:
Friday Lake	nc	12	1	nc	0	0	nc	nc	nc	0	4	nc
Hooks Marsh GP	5	3	nc	0	nc	0	nc	nc	0	2	nc	nc
Met Police Pit	nc	13	0	nc	0	0	nc	nc	nc	0	2	nc
Seventy Acres Lake	12	14	0	9	7	5	3	10	9	14	11	12
Essex:	1	3	2	1	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	1	1	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	2	2	1	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	1
Brocket Park	1	0	0	0	0	0	0	0	0	0	0	8
Panshanger Park	12	18	10	0	8	8	0	0	0	0	nc	nc
Fairlands Valley Park	2	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	2	10	3	0	0	0	0	5	0	10	4	1
Hilfield Park Reservoir	9	10	17	0	0	8	122	195	16	4	19	22
Tring Reservoirs	67	205	58	10	6	11	6	9	163	144	131	147

Tufted DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	360	337	379	223	139	140	96	151	196	254	331	416
Colne Valley:
Hampermill Lake	5	nc	29	37	16	24	18	nc	nc	nc	nc	nc
Batchworth Lake	13	31	29	36	11	9	7	0	10	19	17	0
Stocker's and Bury Lakes	152	117	126	76	59	23	26	72	145	146	201	229
Maple Lodge	11	32	23	17	26	21	15	17	4	3	6	0
Lynsters Lake	43	30	80	12	6	4	0	2	11	10	7	nc
Pynesfield North/South Lakes	46	61	18	6	5	40	8	19	21	22	43	11
Helicon Lake	20	38	14	29	14	3	8	8	0	3	9	6
Troy Mill Lake	70	28	60	10	2	16	14	33	5	51	48	170
Lea Valley:	532	1046	734	292	151	215	234	254	354	581	896	503
Lea Valley:
East Hyde	4	6	4	4	0	0	0	0	0	0	0	0
King's Meads	11	13	14	20	23	19	11	2	1	0	4	2
Amwell GP - Ware / Thrift GP	34	76	64	50	nc	25	85	63	44	nc	92	nc
Amwell NR - others	73	206	99	99	62	57	21	52	39	69	124	85
Stanstead Abbotts Lakes - N lake	19	39	58	nc	nc	nc	nc	nc	39	59	112	29
Rye Meads	130	83	90	nc	nc	nc	nc	nc	147	151	179	234
Broxbourne GP	44	98	nc	nc	nc	nc	nc	nc	nc	15	nc	5
Cheshunt GPs:	217	525	405	119	66	114	117	137	84	287	385	148
Cheshunt GPs:
Herts:	111	203	264	68	25	52	65	67	49	81	196	47
Herts:
Bowyers Water	47	33	68	19	13	6	1	9	nc	8	40	34
Cheshunt Lake	27	2	45	0	0	0	0	0	0	0	0	0
Northmet Lake	4	80	82	47	9	37	61	58	34	49	73	11
Slipe Lane Lake	23	21	51	2	3	9	3	0	15	24	35	0
Turnford Lakes	10	67	18	0	0	0	0	0	0	0	48	2
ex-Herts:	81	222	141	41	34	60	47	70	35	202	189	101
ex-Herts:
Friday Lake	nc	25	16	nc	0	0	nc	nc	nc	24	26	nc
Hooks Marsh GP	15	29	nc	6	nc	12	nc	nc	6	14	nc	nc
Met Police Pit	nc	103	64	nc	4	4	nc	nc	nc	86	75	nc
Seventy Acres Lake	66	65	61	35	30	44	47	70	29	78	88	101
Essex:	25	100	0	10	7	2	5	0	0	4	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	2	nc	nc	0	4	nc	nc
Holyfield Marsh Lake	25	100	0	10	7	nc	5	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	29	30	20	0	0	6	2	0	5	7	13	28
Panshanger Park	66	52	48	38	60	39	29	49	46	28	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	69	26	26	12	29	18	15	6	8	7	0
Hilfield Park Reservoir	33	66	82	106	8	13	146	243	87	167	93	42
Tring Reservoirs	198	241	229	87	139	70	51	58	302	173	0	98

GoldeneyeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	10	10	11	0	2	1	1	0	0	0	7	6
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
Batchworth Lake	0	0	0	0	0	0	0	0	0	0	0	0
Stocker's and Bury Lakes	10	10	11	0	2	0	0	0	0	0	7	6
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	nc
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	1	1	0	0	0	0	0
Lea Valley:	12	26	20	0	0	0	0	0	0	0	16	21
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	1	0	0	nc	0	0	0	0	nc	7	nc
Amwell NR - others	7	18	9	0	0	0	0	0	0	0	5	20
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	1	0
Broxbourne GP	0	0	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	5	7	11	0	0	0	0	0	0	0	3	1
Cheshunt GPs:
Herts:	3	7	7	0	0	0	0	0	0	0	2	1
Herts:
Bowyers Water	3	5	2	0	0	0	0	0	nc	0	2	1
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	2	5	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	0	4	0	0	0	0	0	0	0	1	0
ex-Herts:
Friday Lake	nc	0	4	nc	0	0	nc	nc	nc	0	1	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Met Police Pit	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Seventy Acres Lake	2	0	0	0	0	0	0	0	0	0	0	0
Essex:	0	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	0	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
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	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	0	0	0	0	0	0	0	0	0	0	0
Hilfield Park Reservoir	0	1	1	1	0	0	0	0	0	0	0	0
Tring Reservoirs	4	2	1	0	0	0	0	0	0	0	5	3

Ruddy DuckTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	2	0	0	0	0	0	1	0	0	0	0	0
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
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	1	0	0	0	0	0
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	nc
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:	3	0	0	0	0	0	0	0	0	0	1	0
Lea Valley:
East Hyde	0	0	0	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	nc	0	nc
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	nc	nc	nc	nc	nc	nc	nc	0	nc	0
Cheshunt GPs:	3	0	0	0	0	0	0	0	0	0	1	0
Cheshunt GPs:
Herts:	0	0	0	0	0	0	0	0	0	0	1	0
Herts:
Bowyers Water	0	0	0	0	0	0	0	0	nc	0	1	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	0	0	nc	0	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Met Police Pit	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Seventy Acres Lake	0	0	0	0	0	0	0	0	0	0	0	0
Essex:	3	0	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	3	0	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
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	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	0	3	0	0	0	1	1	0	0	0	0
Hilfield Park Reservoir	0	4	3	4	0	2	1	1	3	1	1	0
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:	7	7	15	9	9	8	9	10	11	7	5	2
Colne Valley:
Hampermill Lake	0	nc	0	0	0	0	0	nc	nc	nc	nc	nc
Batchworth Lake	1	1	1	0	0	0	0	0	0	1	1	0
Stocker's and Bury Lakes	2	0	2	0	0	0	0	0	0	0	0	1
Maple Lodge	0	6	6	9	9	8	9	10	8	6	0	0
Lynsters Lake	0	0	0	0	0	0	0	0	0	0	0	nc
Pynesfield North/South Lakes	0	0	2	0	0	0	0	0	3	0	0	0
Helicon Lake	0	0	0	0	0	0	0	0	0	0	0	0
Troy Mill Lake	4	0	4	0	0	0	0	0	0	0	4	1
Lea Valley:	27	32	19	6	8	9	4	4	56	55	46	40
Lea Valley:
East Hyde	5	3	2	3	4	4	2	2	2	2	3	2
King's Meads	0	5	4	3	3	5	2	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	0	0	0	nc	0	0	0	0	nc	0	nc
Amwell NR - others	1	2	0	0	0	0	0	0	1	3	1	2
Stanstead Abbotts Lakes - N lake	0	1	1	nc	nc	nc	nc	nc	0	0	0	1
Rye Meads	15	15	11	nc	nc	nc	nc	nc	53	44	39	29
Broxbourne GP	0	1	nc	nc	nc	nc	nc	nc	nc	2	nc	3
Cheshunt GPs:	6	5	1	0	1	0	0	2	0	4	3	3
Cheshunt GPs:
Herts:	2	0	1	0	0	0	0	1	0	1	0	0
Herts:
Bowyers Water	2	0	0	0	0	0	0	1	nc	0	0	0
Cheshunt Lake	0	0	0	0	0	0	0	0	0	0	0	0
Northmet Lake	0	0	1	0	0	0	0	0	0	1	0	0
Slipe Lane Lake	0	0	0	0	0	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	0	0	0	0	0	0	0	0	0
ex-Herts:	4	1	0	0	1	0	0	1	0	3	3	3
ex-Herts:
Friday Lake	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Met Police Pit	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Seventy Acres Lake	4	1	0	0	1	0	0	1	0	3	3	3
Essex:	0	4	0	0	0	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	4	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	1
Brocket Park	9	4	4	1	2	4	9	8	22	12	7	5
Panshanger Park	0	0	0	0	0	2	4	12	14	18	nc	nc
Fairlands Valley Park	0	0	0	0	0	0	0	0	0	0	0	nc
Tyttenhanger GPs - all	0	0	1	2	1	0	0	2	1	1	0	0
Hilfield Park Reservoir	15	8	9	12	5	8	8	18	36	50	32	19
Tring Reservoirs	4	1	3	5	0	0	3	5	7	6	4	5

Great Crested GrebeTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	20	43	77	83	65	63	75	102	97	61	39	8
Colne Valley:
Hampermill Lake	0	nc	32	23	31	26	16	nc	nc	nc	nc	nc
Batchworth Lake	3	7	6	3	5	3	4	9	6	4	12	0
Stocker's and Bury Lakes	9	14	9	26	11	16	40	70	54	21	10	4
Maple Lodge	0	0	0	0	0	0	0	0	1	0	0	0
Lynsters Lake	1	11	12	4	6	4	1	4	5	8	1	nc
Pynesfield North/South Lakes	0	2	6	8	5	6	9	6	13	8	7	1
Helicon Lake	1	3	6	8	0	2	1	3	4	5	4	0
Troy Mill Lake	6	6	6	11	7	6	4	10	14	15	5	3
Lea Valley:	22	44	57	46	36	52	44	43	45	48	46	16
Lea Valley:
East Hyde	0	1	1	0	0	0	0	0	0	0	0	0
King's Meads	0	0	0	0	0	0	0	0	0	0	0	0
Amwell GP - Ware / Thrift GP	0	6	3	1	nc	4	1	1	3	nc	1	nc
Amwell NR - others	8	7	7	8	8	7	5	8	5	6	6	2
Stanstead Abbotts Lakes - N lake	0	2	5	nc	nc	nc	nc	nc	4	3	5	0
Rye Meads	1	1	2	nc	nc	nc	nc	nc	2	3	0	1
Broxbourne GP	3	9	nc	nc	nc	nc	nc	nc	nc	5	nc	0
Cheshunt GPs:	10	18	39	37	28	41	38	34	31	31	34	13
Cheshunt GPs:
Herts:	5	10	26	19	13	20	28	28	11	9	11	2
Herts:
Bowyers Water	3	0	4	6	3	12	15	16	nc	2	3	1
Cheshunt Lake	1	0	0	0	0	0	0	0	0	0	1	0
Northmet Lake	0	8	22	11	8	7	12	12	11	7	7	1
Slipe Lane Lake	1	2	0	0	1	0	0	0	0	0	0	0
Turnford Lakes	0	0	0	2	1	1	1	0	0	0	0	0
ex-Herts:	5	8	11	15	9	21	5	6	20	22	23	11
ex-Herts:
Friday Lake	nc	0	2	nc	2	1	nc	nc	nc	2	1	nc
Hooks Marsh GP	1	3	nc	5	nc	5	nc	nc	4	2	nc	nc
Met Police Pit	nc	1	3	nc	3	3	nc	nc	nc	3	5	nc
Seventy Acres Lake	4	4	6	10	4	12	5	6	16	15	17	11
Essex:	0	0	2	3	6	0	5	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	0	0	2	3	6	nc	5	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	1	1	0	2	2	3	8	4	5	6	2	0
Panshanger Park	0	0	0	7	7	7	12	8	5	4	nc	nc
Fairlands Valley Park	0	0	0	3	2	0	0	0	0	1	0	nc
Tyttenhanger GPs - all	0	18	16	23	12	8	18	18	19	18	21	0
Hilfield Park Reservoir	7	10	11	11	13	21	41	46	4	7	12	0
Tring Reservoirs	28	29	23	21	37	21	27	23	37	28	23	18

CormorantTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	62	39	34	24	24	30	30	31	48	50	56	28
Colne Valley:
Hampermill Lake	0	nc	0	4	3	2	2	nc	nc	nc	nc	nc
Batchworth Lake	3	4	2	3	2	4	3	8	11	10	11	3
Stocker's and Bury Lakes	29	26	22	12	9	13	13	15	33	33	38	18
Maple Lodge	0	1	0	1	1	2	0	0	1	1	1	0
Lynsters Lake	6	0	0	1	0	0	1	0	1	0	0	nc
Pynesfield North/South Lakes	0	5	4	0	1	0	0	0	0	0	4	0
Helicon Lake	2	0	1	0	0	0	0	0	0	1	0	0
Troy Mill Lake	22	3	5	3	8	9	11	8	2	5	2	7
Lea Valley:	71	104	58	37	32	23	25	55	58	75	116	61
Lea Valley:
East Hyde	4	3	2	2	2	2	2	2	2	3	2	8
King's Meads	0	22	2	2	5	4	6	5	2	6	1	1
Amwell GP - Ware / Thrift GP	0	2	0	1	nc	1	0	2	3	nc	0	nc
Amwell NR - others	11	24	31	25	16	12	16	24	13	12	13	16
Stanstead Abbotts Lakes - N lake	0	0	4	nc	nc	nc	nc	nc	2	4	12	0
Rye Meads	9	0	1	nc	nc	nc	nc	nc	17	17	11	9
Broxbourne GP	3	2	nc	nc	nc	nc	nc	nc	nc	1	nc	9
Cheshunt GPs:	44	51	18	7	9	4	1	22	19	32	77	18
Cheshunt GPs:
Herts:	14	10	8	1	4	0	0	9	5	8	19	4
Herts:
Bowyers Water	2	3	0	0	1	0	0	4	nc	2	2	0
Cheshunt Lake	8	1	4	0	1	0	0	0	0	1	2	0
Northmet Lake	1	2	3	1	1	0	0	5	5	5	15	1
Slipe Lane Lake	1	1	0	0	1	0	0	0	0	0	0	1
Turnford Lakes	2	3	1	0	0	0	0	0	0	0	0	2
ex-Herts:	28	41	10	6	2	4	1	13	14	24	58	14
ex-Herts:
Friday Lake	nc	0	0	nc	0	0	nc	nc	nc	0	0	nc
Hooks Marsh GP	1	7	nc	2	nc	1	nc	nc	7	7	nc	nc
Met Police Pit	nc	1	0	nc	0	0	nc	nc	nc	0	4	nc
Seventy Acres Lake	27	33	10	4	2	3	1	13	7	17	54	14
Essex:	2	0	0	0	3	0	0	0	0	0	0	0
Essex:
Hall Marsh Scrape	0	0	nc	0	nc	0	nc	nc	0	0	nc	nc
Holyfield Marsh Lake	2	0	0	0	3	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	10	11	2	0	0	3	1	4	6	8	10	17
Panshanger Park	6	24	6	0	0	0	6	2	3	4	nc	nc
Fairlands Valley Park	3	0	0	0	0	0	0	0	0	0	1	nc
Tyttenhanger GPs - all	0	6	13	4	1	0	0	2	5	6	15	0
Hilfield Park Reservoir	1	3	5	1	0	0	3	2	4	3	5	0
Tring Reservoirs	20	17	13	11	10	29	13	15	43	32	38	4

Grey HeronTop of page

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

MoorhenTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	61	57	73	59	51	31	51	27	49	38	44	34
Colne Valley:
Hampermill Lake	23	nc	29	19	24	10	25	nc	nc	nc	nc	nc
Batchworth Lake	1	2	3	6	3	2	8	6	8	12	9	2
Stocker's and Bury Lakes	10	11	8	8	8	6	1	5	13	10	18	19
Maple Lodge	5	7	9	19	13	11	10	12	15	7	12	5
Lynsters Lake	11	12	2	0	0	1	1	1	6	2	0	nc
Pynesfield North/South Lakes	3	16	10	0	0	0	2	1	2	0	1	0
Helicon Lake	5	5	4	4	3	1	4	1	3	5	3	6
Troy Mill Lake	3	4	8	3	0	0	0	1	2	2	1	2
Lea Valley:	224	187	162	86	50	61	74	97	226	142	144	85
Lea Valley:
East Hyde	68	30	17	10	10	10	16	10	13	10	12	12
King's Meads	3	27	32	29	23	21	30	43	40	26	24	15
Amwell GP - Ware / Thrift GP	0	3	0	1	nc	1	0	1	2	nc	0	nc
Amwell NR - others	6	9	24	26	8	2	15	25	17	25	16	3
Stanstead Abbotts Lakes - N lake	3	2	5	nc	nc	nc	nc	nc	8	1	9	4
Rye Meads	58	50	51	nc	nc	nc	nc	nc	121	42	51	11
Broxbourne GP	2	4	nc	nc	nc	nc	nc	nc	nc	1	nc	0
Cheshunt GPs:	84	62	33	20	9	27	13	18	25	37	32	40
Cheshunt GPs:
Herts:	46	18	15	8	4	7	6	16	8	17	12	28
Herts:
Bowyers Water	13	10	8	3	1	1	3	6	nc	8	4	6
Cheshunt Lake	19	6	2	1	2	6	1	6	2	8	4	11
Northmet Lake	7	2	5	4	1	0	2	2	5	0	3	4
Slipe Lane Lake	3	0	0	0	0	0	0	1	1	0	0	0
Turnford Lakes	4	0	0	0	0	0	0	1	0	1	1	7
ex-Herts:	25	36	18	7	5	12	7	2	10	14	20	12
ex-Herts:
Friday Lake	nc	1	0	nc	2	0	nc	nc	nc	2	1	nc
Hooks Marsh GP	10	5	nc	4	nc	2	nc	nc	0	1	nc	nc
Met Police Pit	nc	5	3	nc	0	2	nc	nc	nc	2	3	nc
Seventy Acres Lake	15	25	15	3	3	8	7	2	10	9	16	12
Essex:	13	8	0	5	0	8	0	0	7	6	0	0
Essex:
Hall Marsh Scrape	12	8	nc	5	nc	8	nc	nc	7	6	nc	nc
Holyfield Marsh Lake	1	0	0	0	0	nc	0	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	0
Brocket Park	5	21	10	9	7	11	8	29	23	18	16	13
Panshanger Park	3	4	3	12	6	11	12	19	16	13	nc	nc
Fairlands Valley Park	11	4	7	5	6	6	9	13	18	17	22	nc
Tyttenhanger GPs - all	0	6	12	10	4	4	5	8	8	14	22	8
Hilfield Park Reservoir	3	1	2	6	3	0	5	6	9	13	11	5
Tring Reservoirs	0	12	6	19	8	6	23	29	75	47	31	48

CootTop of page

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Colne Valley:	1581	1066	742	545	363	434	637	764	1049	1184	1316	698
Colne Valley:
Hampermill Lake	21	nc	54	56	34	38	71	nc	nc	nc	nc	nc
Batchworth Lake	119	99	92	54	53	62	109	109	73	75	74	5
Stocker's and Bury Lakes	564	303	115	112	89	109	154	233	440	557	379	396
Maple Lodge	2	19	26	31	20	43	35	52	38	41	48	6
Lynsters Lake	251	118	113	89	19	42	41	10	44	35	12	nc
Pynesfield North/South Lakes	149	150	138	57	56	34	46	95	105	101	165	72
Helicon Lake	122	51	41	30	20	21	62	75	81	94	197	101
Troy Mill Lake	353	326	163	116	72	85	119	190	268	281	441	118
Lea Valley:	2688	2117	1576	664	533	620	858	1006	1680	2220	2450	2428
Lea Valley:
East Hyde	10	10	10	10	8	8	16	10	10	10	12	17
King's Meads	30	116	79	67	68	67	88	36	34	29	30	28
Amwell GP - Ware / Thrift GP	62	95	32	1	nc	5	17	38	35	nc	54	nc
Amwell NR - others	547	297	247	154	108	88	97	258	315	479	523	565
Stanstead Abbotts Lakes - N lake	151	74	69	nc	nc	nc	nc	nc	115	101	158	169
Rye Meads	225	183	166	nc	nc	nc	nc	nc	701	400	520	467
Broxbourne GP	235	212	nc	nc	nc	nc	nc	nc	nc	99	nc	151
Cheshunt GPs:	1428	1130	973	432	349	452	640	664	470	1102	1153	1031
Cheshunt GPs:
Herts:	921	526	544	243	181	178	335	419	176	552	718	688
Herts:
Bowyers Water	484	152	117	58	50	68	181	206	nc	353	418	365
Cheshunt Lake	56	31	38	13	6	12	15	16	21	20	22	32
Northmet Lake	174	168	215	92	79	75	95	139	105	107	176	150
Slipe Lane Lake	157	95	98	49	33	14	30	35	26	52	48	61
Turnford Lakes	50	80	76	31	13	9	14	23	24	20	54	80
ex-Herts:	470	526	403	169	155	265	93	245	287	546	435	343
ex-Herts:
Friday Lake	nc	22	29	nc	14	16	nc	nc	nc	88	77	nc
Hooks Marsh GP	110	62	nc	51	nc	38	nc	nc	70	93	nc	nc
Met Police Pit	nc	113	120	nc	86	75	nc	nc	nc	137	117	nc
Seventy Acres Lake	360	329	254	118	55	136	93	245	217	228	241	343
Essex:	37	78	26	20	13	9	212	0	7	4	0	0
Essex:
Hall Marsh Scrape	8	14	nc	9	nc	9	nc	nc	7	4	nc	nc
Holyfield Marsh Lake	29	64	26	11	13	nc	212	nc	nc	nc	nc	nc
Radwell Mill	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	nc	5
Brocket Park	76	71	55	29	27	39	53	72	87	109	71	132
Panshanger Park	116	82	58	60	45	61	89	114	120	139	nc	nc
Fairlands Valley Park	6	11	8	5	3	9	8	5	7	7	8	nc
Tyttenhanger GPs - all	148	91	72	44	49	56	137	121	90	171	173	120
Hilfield Park Reservoir	229	135	141	108	88	140	254	191	139	171	195	197
Tring Reservoirs	778	597	380	265	138	473	564	799	1082	807	711	684