Also present

Totals Berkheide (Katwijk) 2025

	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	0	11	39	50	33	17	33 (19 Apr)	13	4	20 Mar	19 Apr
2.	Canada Goose	6	91	17	114	61	53	33 ( 2 Mar)	52	16	25 Feb	15 Apr
3.	Barnacle Goose	0	1657	2145	3802	368	3434	1126 (20 Mar)	81	25	2 Mar	23 Apr
4.	Greylag Goose	22	419	121	562	218	344	92 ( 8 Mar)	90	28	17 Feb	23 Apr
5.	goose sp.	1200	1019	300	2519	19	2500	1200 (17 Feb)	19	6	17 Feb	15 Apr
6.	Pink-footed Goose	0	7	0	7	0	7	7 (20 Mar)	3	1	20 Mar	20 Mar
7.	Tundra Bean Goose	0	3	0	3	0	3	3 (20 Mar)	3	1	20 Mar	20 Mar
8.	Eurasian White-fronted Goose	6	3	0	9	0	9	6 (17 Feb)	6	2	17 Feb	7 Mar
9.	Mute Swan	0	0	4	4	0	4	2 (19 Apr)	10	3	12 Apr	19 Apr
10.	Egyptian Goose	0	131	136	267	60	207	44 (15 Apr)	48	15	2 Mar	23 Apr
11.	Shelduck	0	33	44	77	26	51	14 (20 Mar)	48	15	8 Mar	23 Apr
12.	Shoveler	0	181	274	455	48	407	176 (12 Apr)	42	13	8 Mar	19 Apr
13.	Gadwall	0	8	5	13	4	9	4 ( 8 Mar)	23	7	8 Mar	23 Apr
14.	Wigeon	0	44	0	44	30	14	30 ( 2 Mar)	10	3	2 Mar	20 Mar
15.	Mallard	0	4	1	5	2	3	3 (19 Mar)	10	3	19 Mar	2 Apr
16.	Pintail	0	17	0	17	0	17	8 ( 8 Mar)	10	3	8 Mar	22 Mar
17.	Teal	0	15	16	31	0	31	15 ( 8 Mar)	10	3	8 Mar	12 Apr
18.	Red-crested Pochard	0	0	9	9	0	9	9 ( 4 Apr)	3	1	4 Apr	4 Apr
19.	Pochard	0	0	1	1	0	1	1 (19 Apr)	3	1	19 Apr	19 Apr
20.	Eider	0	41	10	51	31	20	18 (21 Mar)	35	11	2 Mar	19 Apr
21.	Common Scoter	0	30	73	103	39	64	36 (16 Apr)	42	13	2 Mar	19 Apr
22.	Goldeneye	0	4	0	4	2	2	4 ( 9 Mar)	3	1	9 Mar	9 Mar
23.	Goosander	2	12	1	15	8	7	6 ( 8 Mar)	19	6	17 Feb	6 Apr
24.	Red-breasted Merganser	0	1	18	19	6	13	8 (19 Apr)	16	5	21 Mar	19 Apr
25.	Swift	0	0	3	3	0	3	3 (23 Apr)	3	1	23 Apr	23 Apr
26.	Stock Dove	6	37	24	67	9	58	11 ( 6 Mar)	68	21	17 Feb	19 Apr
27.	Woodpigeon	2	2923	1410	4335	342	3993	1352 (19 Mar)	87	27	25 Feb	23 Apr
28.	Collared Dove	0	4	10	14	2	12	3 ( 3 Apr)	32	10	5 Mar	19 Apr
29.	Great Crested Grebe	0	9	0	9	4	5	5 ( 8 Mar)	10	3	7 Mar	19 Mar
30.	Oystercatcher	0	13	98	111	66	45	29 (12 Apr)	32	10	2 Mar	23 Apr
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Avocet	0	38	7	45	0	45	21 ( 8 Mar)	16	5	8 Mar	12 Apr
32.	Grey Plover	0	0	4	4	0	4	4 ( 5 Apr)	3	1	5 Apr	5 Apr
33.	Golden Plover	0	2	18	20	0	20	18 ( 4 Apr)	10	3	8 Mar	4 Apr
34.	Ringed Plover	0	6	0	6	0	6	6 (21 Mar)	3	1	21 Mar	21 Mar
35.	Little Ringed Plover	0	2	25	27	8	19	8 (12 Apr)	29	9	22 Mar	19 Apr
36.	Lapwing	5	23	34	62	26	36	9 ( 8 Mar)	58	18	26 Feb	23 Apr
37.	Whimbrel	0	0	320	320	2	318	82 (12 Apr)	32	10	3 Apr	23 Apr
38.	Curlew	0	6	53	59	0	59	36 ( 7 Apr)	23	7	9 Mar	19 Apr
39.	Bar-tailed Godwit	0	0	2	2	0	2	1 (19 Apr)	6	2	19 Apr	23 Apr
40.	Black-tailed Godwit	0	1	0	1	0	1	1 (21 Mar)	3	1	21 Mar	21 Mar
41.	Snipe	1	8	103	112	0	112	57 ( 4 Apr)	35	11	17 Feb	12 Apr
42.	Green Sandpiper	0	2	208	210	1	209	67 ( 4 Apr)	39	12	19 Mar	23 Apr
43.	Wood Sandpiper	0	0	1	1	0	1	1 (15 Apr)	3	1	15 Apr	15 Apr
44.	Redshank	0	9	63	72	1	71	31 ( 6 Apr)	32	10	8 Mar	19 Apr
45.	Greenshank	0	0	7	7	0	7	4 (19 Apr)	6	2	6 Apr	19 Apr
46.	Ruff	0	0	24	24	0	24	21 ( 3 Apr)	6	2	3 Apr	6 Apr
47.	wader sp.	0	0	43	43	0	43	35 ( 6 Apr)	13	4	6 Apr	19 Apr
48.	Dunlin	0	0	9	9	0	9	9 ( 4 Apr)	3	1	4 Apr	4 Apr
49.	Caspian Tern	0	0	4	4	0	4	4 (12 Apr)	3	1	12 Apr	12 Apr
50.	Black Tern	0	0	1	1	0	1	1 (15 Apr)	3	1	15 Apr	15 Apr
51.	Common Tern	0	0	126	126	0	126	100 (19 Apr)	19	6	6 Apr	19 Apr
52.	Sandwich Tern	0	0	70	70	9	61	19 (12 Apr)	32	10	1 Apr	23 Apr
53.	Little Gull	0	3	83	86	81	5	80 (15 Apr)	10	3	17 Mar	15 Apr
54.	Black-headed Gull	0	940	281	1221	20	1201	280 (20 Mar)	52	16	2 Mar	15 Apr
55.	Mediterranean Gull	0	0	52	52	16	36	21 (23 Apr)	19	6	3 Apr	23 Apr
56.	Common Gull	0	498	2462	2960	6	2954	1123 ( 8 Apr)	55	17	2 Mar	12 Apr
57.	Herring Gull	16	911	115	1042	54	988	521 ( 2 Mar)	48	15	26 Feb	12 Apr
58.	Great Black-backed Gull	0	4	5	9	2	7	2 ( 2 Apr)	26	8	7 Mar	19 Apr
59.	Lesser Black-backed Gull	13	1831	1635	3479	61	3418	429 (20 Mar)	90	28	17 Feb	23 Apr
60.	Red-throated Diver	5	4	1	10	4	6	5 (26 Feb)	13	4	26 Feb	6 Apr
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	diver sp.	0	1	0	1	0	1	1 (20 Mar)	3	1	20 Mar	20 Mar
62.	White Stork	0	0	10	10	0	10	6 ( 4 Apr)	10	3	4 Apr	8 Apr
63.	Gannet	0	49	2	51	11	40	25 ( 2 Mar)	26	8	2 Mar	16 Apr
64.	Cormorant	41	1067	609	1717	145	1572	413 (19 Mar)	87	27	17 Feb	23 Apr
65.	Spoonbill	1	94	238	333	0	333	70 (15 Apr)	55	17	25 Feb	23 Apr
66.	Great White Egret	1	8	15	24	0	24	9 ( 4 Apr)	32	10	25 Feb	16 Apr
67.	Grey Heron	2	103	218	323	13	310	133 ( 4 Apr)	87	27	25 Feb	23 Apr
68.	Purple Heron	0	0	1	1	0	1	1 (23 Apr)	3	1	23 Apr	23 Apr
69.	Osprey	0	0	2	2	1	1	1 ( 7 Apr)	6	2	7 Apr	19 Apr
70.	Sparrowhawk	0	4	20	24	2	22	8 ( 4 Apr)	29	9	19 Mar	19 Apr
71.	Goshawk	0	0	2	2	1	1	1 ( 3 Apr)	6	2	3 Apr	4 Apr
72.	Marsh Harrier	0	16	46	62	2	60	13 ( 6 Apr)	52	16	19 Mar	23 Apr
73.	Hen Harrier	1	3	4	8	7	1	2 ( 3 Apr)	23	7	26 Feb	5 Apr
74.	Red Kite	0	0	1	1	1	0	1 ( 2 Apr)	3	1	2 Apr	2 Apr
75.	Common Buzzard	0	0	6	6	1	5	4 ( 3 Apr)	10	3	3 Apr	12 Apr
76.	Short-eared Owl	0	2	0	2	0	2	1 (20 Mar)	6	2	20 Mar	21 Mar
77.	Great Spotted Woodpecker	2	10	4	16	6	10	2 (26 Feb)	35	11	26 Feb	15 Apr
78.	Kestrel	0	4	77	81	2	79	40 ( 4 Apr)	35	11	21 Mar	19 Apr
79.	Merlin	0	0	9	9	0	9	5 ( 4 Apr)	13	4	4 Apr	8 Apr
80.	Hobby	0	0	2	2	0	2	1 (15 Apr)	6	2	15 Apr	19 Apr
81.	Peregrine	0	3	0	3	0	3	1 ( 2 Mar)	10	3	2 Mar	22 Mar
82.	Jay	0	0	2	2	0	2	1 ( 6 Apr)	6	2	6 Apr	15 Apr
83.	Magpie	0	61	14	75	8	67	17 (20 Mar)	42	13	2 Mar	15 Apr
84.	Jackdaw	11	161	130	302	53	249	34 (21 Mar)	84	26	25 Feb	23 Apr
85.	Rook	0	1	9	10	2	8	3 (12 Apr)	19	6	9 Mar	15 Apr
86.	Carrion Crow	2	56	186	244	16	228	38 ( 7 Apr)	65	20	25 Feb	23 Apr
87.	Blue Tit	0	10	1	11	3	8	4 ( 2 Mar)	16	5	2 Mar	12 Apr
88.	Great Tit	1	3	0	4	1	3	2 ( 8 Mar)	10	3	25 Feb	20 Mar
89.	Wood Lark	1	7	0	8	0	8	4 (21 Mar)	13	4	25 Feb	21 Mar
90.	Skylark	1	27	0	28	1	27	11 (21 Mar)	19	6	25 Feb	23 Mar
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Sand Martin	0	3	505	508	76	432	134 (12 Apr)	48	15	21 Mar	23 Apr
92.	Swallow	0	1	274	275	51	224	67 (12 Apr)	42	13	22 Mar	23 Apr
93.	House Martin	0	0	4	4	0	4	1 ( 6 Apr)	13	4	6 Apr	23 Apr
94.	Willow Warbler	0	0	3	3	0	3	2 (15 Apr)	6	2	7 Apr	15 Apr
95.	Chiffchaff	0	21	0	21	4	17	9 (21 Mar)	26	8	7 Mar	23 Mar
96.	Chiffchaff/Willow Warbler	0	0	17	17	0	17	5 ( 8 Apr)	19	6	1 Apr	12 Apr
97.	Starling	15	1596	85	1696	35	1661	748 (21 Mar)	90	28	17 Feb	23 Apr
98.	Song Thrush	0	338	7187	7525	4	7521	5625 ( 7 Apr)	58	18	8 Mar	23 Apr
99.	Mistle Thrush	1	42	99	142	0	142	32 ( 3 Apr)	52	16	25 Feb	15 Apr
100.	Redwing	1	25	490	516	4	512	416 ( 7 Apr)	32	10	25 Feb	12 Apr
101.	Blackbird	0	2	1	3	1	2	2 (21 Mar)	6	2	21 Mar	3 Apr
102.	Fieldfare	0	0	3	3	0	3	3 (12 Apr)	3	1	12 Apr	12 Apr
103.	Ring Ouzel	0	4	96	100	1	99	29 (12 Apr)	42	13	22 Mar	19 Apr
104.	Wheatear	0	0	4	4	1	3	1 ( 8 Apr)	13	4	8 Apr	23 Apr
105.	House Sparrow	0	0	1	1	0	1	1 ( 7 Apr)	3	1	7 Apr	7 Apr
106.	Dunnock	0	7	1	8	0	8	4 ( 8 Mar)	16	5	8 Mar	4 Apr
107.	Blue-headed Wagtail	0	0	105	105	1	104	47 ( 8 Apr)	32	10	1 Apr	16 Apr
108.	Yellow Wagtail (flavissima)	0	0	3	3	0	3	1 ( 6 Apr)	10	3	6 Apr	15 Apr
109.	Yellow wagtail sp.	0	0	285	285	1	284	191 (15 Apr)	19	6	3 Apr	23 Apr
110.	Grey Wagtail	0	9	4	13	0	13	6 (21 Mar)	23	7	18 Mar	7 Apr
111.	White Wagtail	2	172	133	307	13	294	66 (22 Mar)	77	24	26 Feb	23 Apr
112.	alba wagtail sp.	0	177	56	233	16	217	87 (21 Mar)	42	13	6 Mar	19 Apr
113.	Motacilla (wagtail) sp.	0	2	0	2	0	2	2 (20 Mar)	3	1	20 Mar	20 Mar
114.	Pied Wagtail	0	14	1	15	1	14	6 ( 8 Mar)	19	6	8 Mar	3 Apr
115.	Meadow Pipit	2	410	4989	5401	12	5389	2444 (15 Apr)	94	29	17 Feb	23 Apr
116.	Tree Pipit	0	2	132	134	0	134	42 (12 Apr)	48	15	23 Mar	23 Apr
117.	Rock Pipit	0	5	0	5	0	5	3 (21 Mar)	10	3	8 Mar	22 Mar
118.	Rock Pipit/Water Pipit	0	4	1	5	0	5	2 (20 Mar)	13	4	2 Mar	4 Apr
119.	Chaffinch	112	1631	69	1812	23	1789	977 ( 9 Mar)	87	27	17 Feb	19 Apr
120.	Brambling	6	17	4	27	0	27	5 ( 9 Mar)	42	13	17 Feb	14 Apr
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Hawfinch	0	10	4	14	2	12	3 (18 Mar)	23	7	8 Mar	19 Apr
122.	Bullfinch	0	1	1	2	0	2	1 (19 Mar)	6	2	19 Mar	8 Apr
123.	Greenfinch	0	27	10	37	3	34	5 (20 Mar)	42	13	2 Mar	15 Apr
124.	Linnet	2	121	203	326	11	315	50 (21 Mar)	84	26	25 Feb	23 Apr
125.	redpoll sp.	0	5	2	7	3	4	3 (20 Mar)	16	5	7 Mar	15 Apr
126.	Goldfinch	2	89	42	133	30	103	24 ( 8 Mar)	61	19	17 Feb	15 Apr
127.	Siskin	5	41	13	59	6	53	12 ( 6 Mar)	52	16	25 Feb	15 Apr
128.	Yellowhammer	0	2	0	2	0	2	1 (20 Mar)	6	2	20 Mar	22 Mar
129.	Reed Bunting	1	39	9	49	2	47	14 ( 8 Mar)	55	17	25 Feb	12 Apr
	Other species
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Bumblebee sp.	0	3	2	5	1	4	3 (22 Mar)	6	2	22 Mar	4 Apr
	Species	Feb	Mar	Apr	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	1497	17515	26961	45973	2247	43726		100	31
	Observation hours	5:10	46:40	51:19	103:09

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Totals Berkheide (Katwijk) 2025