Totals Huisduinen (zeetrek) 2021

Year
Period
count-field
Also present

	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	832	1297	13991	749	3322	5	1	0	324	3152	550	1100	25323	4712	20611	3796 (24 Mar)	68	121	1 Jan	31 Dec
2.	Pale-bellied Brent Goose	1	0	4	0	0	0	0	0	0	0	0	0	5	0	5	4 (24 Mar)	1	2	12 Jan	24 Mar
3.	Canada Goose	0	1	3	1	5	82	28	0	0	0	0	0	120	87	33	82 (7 Jun)	4	8	19 Feb	3 Jul
4.	Barnacle Goose	0	282	98	41	6	0	0	0	0	0	2	2	431	1	430	265 (22 Feb)	7	13	13 Feb	25 Dec
5.	Greylag Goose	713	53	112	158	131	33	76	34	158	1	83	109	1661	616	1045	576 (1 Jan)	47	85	1 Jan	26 Dec
6.	Domestic Goose	0	0	1	0	1	0	0	0	0	0	0	0	2	2	0	1 (24 Mar)	1	2	24 Mar	27 May
7.	Pink-footed Goose	0	92	0	0	0	0	0	0	0	0	0	0	92	92	0	92 (8 Feb)	1	1	8 Feb	8 Feb
8.	Tundra Bean Goose	0	0	0	0	0	0	0	0	0	0	0	55	55	0	55	55 (15 Dec)	1	1	15 Dec	15 Dec
9.	Eurasian White-fronted Goose	22	3	0	0	0	0	0	0	0	0	60	5	90	2	88	60 (28 Nov)	2	4	1 Jan	26 Dec
10.	Black Swan	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (13 May)	1	1	13 May	13 May
11.	Mute Swan	3	3	0	0	48	7	1	0	0	0	7	4	73	34	39	39 (13 May)	7	12	1 Jan	22 Dec
12.	Bewick's Swan	0	0	0	0	0	0	0	0	0	0	0	6	6	0	6	6 (26 Dec)	1	1	26 Dec	26 Dec
13.	Whooper Swan	0	0	0	0	0	0	0	0	0	2	0	7	9	7	2	7 (21 Dec)	1	2	21 Oct	21 Dec
14.	Egyptian Goose	34	5	48	46	12	9	8	0	9	6	19	55	251	66	185	35 (24 Mar)	25	44	1 Jan	26 Dec
15.	Shelduck	39	31	75	128	124	174	1050	62	31	7	8	14	1743	75	1668	407 (17 Jul)	51	91	2 Jan	26 Dec
16.	Garganey	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (30 Apr)	1	1	30 Apr	30 Apr
17.	Shoveler	0	33	3	119	15	0	0	0	1	0	3	5	179	8	171	36 (24 Apr)	13	23	13 Feb	26 Dec
18.	Gadwall	15	91	9	3	46	4	1	3	1	1	1	35	210	70	140	64 (13 Feb)	19	34	4 Jan	26 Dec
19.	Wigeon	666	499	1911	257	6	0	0	50	3	89	42	497	4020	252	3768	491 (9 Mar)	28	51	1 Jan	25 Dec
20.	Mallard	1	2	4	17	25	6	6	11	1	1	0	3	77	25	52	10 (19 Apr)	15	27	1 Jan	17 Dec
21.	Pintail	2	17	16	7	0	0	0	5	0	0	0	11	58	11	47	13 (22 Mar)	6	10	6 Jan	25 Dec
22.	Teal	68	351	564	490	94	0	8	19	54	45	0	32	1725	72	1653	223 (22 Mar)	37	66	2 Jan	25 Dec
23.	duck sp.	17	0	3	4	1	0	2	9	32	0	0	0	68	8	60	28 (22 Sep)	7	12	1 Jan	22 Sep
24.	Pochard	0	0	0	0	0	0	0	0	0	0	2	0	2	0	2	2 (22 Nov)	1	1	22 Nov	22 Nov
25.	Tufted Duck	5	12	3	11	2	1	3	0	0	1	3	0	41	3	38	6 (19 Feb)	10	18	4 Jan	15 Nov
26.	Scaup	0	2	0	0	0	0	0	0	0	0	0	0	2	1	1	1 (13 Feb)	1	2	13 Feb	27 Feb
27.	Eider	239	630	562	656	404	146	45	3	100	91	308	194	3378	1139	2239	292 (27 Feb)	76	136	1 Jan	26 Dec
28.	Velvet Scoter	14	0	7	10	2	0	0	0	0	4	0	2	39	1	38	6 (1 Jan)	7	13	1 Jan	25 Dec
29.	Common Scoter	2028	364	1721	2750	2668	365	375	156	536	1076	604	643	13286	3465	9821	1008 (24 Apr)	89	159	1 Jan	26 Dec
30.	Long-tailed Duck	4	0	2	0	0	0	0	0	0	0	0	1	7	0	7	4 (1 Jan)	2	3	1 Jan	26 Dec
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Goldeneye	0	0	5	0	0	20	0	1	0	3	3	3	35	1	34	20 (7 Jun)	6	11	9 Mar	21 Dec
32.	Goosander	0	0	8	0	0	0	0	0	0	0	4	20	32	11	21	20 (26 Dec)	2	4	9 Mar	26 Dec
33.	Red-breasted Merganser	37	65	237	174	47	1	1	0	35	94	20	42	753	208	545	36 (19 Mar)	54	96	4 Jan	26 Dec
34.	Swift	0	0	0	0	16	37	109	1	0	0	0	0	163	38	125	28 (3 Jul)	9	17	13 May	21 Aug
35.	Cuckoo	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (29 May)	1	1	29 May	29 May
36.	Stock Dove	4	1	1	4	0	2	0	0	0	0	0	0	12	4	8	4 (16 Apr)	4	7	29 Jan	14 Jun
37.	Woodpigeon	0	6	8	7	26	24	0	1	4	11	0	1	88	33	55	20 (2 Jun)	11	20	13 Feb	26 Dec
38.	Collared Dove	0	2	9	1	19	4	2	0	4	0	0	0	41	36	5	15 (25 May)	5	9	22 Feb	27 Sep
39.	Red-necked Grebe	0	0	0	1	0	0	0	0	1	0	1	2	5	2	3	1 (2 Apr)	3	5	2 Apr	20 Dec
40.	Great Crested Grebe	7	56	96	34	9	8	9	4	26	18	27	22	316	116	200	22 (6 Mar)	47	84	4 Jan	28 Dec
41.	Black-necked / Slavonian Grebe	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (2 Apr)	1	1	2 Apr	2 Apr
42.	grebe sp.	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (17 Nov)	1	1	17 Nov	17 Nov
43.	Oystercatcher	193	212	264	446	495	288	394	341	345	75	212	160	3425	726	2699	129 (13 Sep)	94	169	1 Jan	31 Dec
44.	Avocet	0	0	2	2	2	0	0	0	0	0	0	2	8	2	6	2 (20 Mar)	2	4	20 Mar	26 Dec
45.	Grey Plover	0	0	31	130	52	8	0	8	0	24	1	0	254	56	198	73 (21 Apr)	11	19	9 Mar	17 Nov
46.	Golden Plover	0	0	0	10	0	0	0	0	21	0	0	0	31	9	22	12 (25 Sep)	3	5	3 Apr	25 Sep
47.	Ringed Plover	0	0	2	0	4	1	1	0	0	0	38	0	46	0	46	38 (13 Nov)	3	5	19 Mar	13 Nov
48.	Lapwing	9	54	7	4	1	0	1	0	0	0	0	10	86	82	4	53 (8 Feb)	6	10	1 Jan	21 Dec
49.	Whimbrel	0	0	0	500	42	1	4	7	23	0	0	0	577	30	547	149 (17 Apr)	16	28	2 Apr	27 Sep
50.	Curlew	12	24	46	130	4	5	16	27	32	6	11	13	326	89	237	91 (17 Apr)	46	83	1 Jan	26 Dec
51.	Bar-tailed Godwit	0	0	20	1031	102	0	2	0	0	0	0	0	1155	0	1155	406 (24 Apr)	10	18	9 Mar	24 Jul
52.	Icelandic Black-tailed Godwit	0	1	0	0	0	0	0	0	0	0	0	0	1	0	1	1 (27 Feb)	1	1	27 Feb	27 Feb
53.	Jack Snipe	0	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 (26 Dec)	1	1	26 Dec	26 Dec
54.	Woodcock	0	1	0	0	0	0	0	0	0	0	0	0	1	1	0	1 (13 Feb)	1	1	13 Feb	13 Feb
55.	Snipe	0	6	0	0	0	0	0	7	1	0	0	1	15	1	14	7 (21 Aug)	3	5	12 Feb	26 Dec
56.	Grey Phalarope	0	0	0	0	0	0	0	0	0	2	2	0	4	3	1	1 (21 Oct)	2	4	21 Oct	29 Nov
57.	Green Sandpiper	0	0	1	0	0	0	0	0	0	0	0	1	2	0	2	1 (8 Mar)	1	2	8 Mar	26 Dec
58.	Wood Sandpiper	0	0	0	0	0	2	0	0	2	0	0	0	4	1	3	2 (2 Jun)	2	3	2 Jun	4 Sep
59.	Redshank	0	2	4	6	0	1	13	30	2	0	0	7	65	3	62	25 (30 Aug)	10	18	10 Feb	26 Dec
60.	Spotted Redshank	0	0	0	7	0	0	0	4	0	0	0	0	11	1	10	7 (17 Apr)	2	3	17 Apr	28 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Greenshank	0	0	0	3	2	0	0	7	0	0	0	0	12	0	12	5 (23 Aug)	3	5	24 Apr	23 Aug
62.	Turnstone	14	48	43	1	358	0	2	104	79	0	19	44	712	85	627	308 (1 May)	23	41	1 Jan	26 Dec
63.	Knot	0	2	17	64	15	0	3	14	21	0	18	6	160	11	149	59 (19 Apr)	12	21	13 Feb	25 Dec
64.	wader sp.	0	1	1	1	1	0	0	1	0	0	1	0	6	2	4	1 (12 Feb)	3	6	12 Feb	29 Nov
65.	small wader	0	0	2	0	0	0	0	0	0	1	0	3	6	1	5	2 (6 Mar)	2	4	6 Mar	26 Dec
66.	Sanderling	4	1	18	146	391	76	40	470	83	22	65	17	1333	159	1174	280 (23 Aug)	30	53	1 Jan	26 Dec
67.	Dunlin	3	45	252	210	236	16	69	53	237	60	48	41	1270	382	888	232 (25 Sep)	35	62	25 Jan	26 Dec
68.	Purple Sandpiper	15	0	0	0	4	0	0	1	5	0	10	9	44	14	30	8 (1 Jan)	6	11	1 Jan	21 Dec
69.	Little Stint	0	0	0	0	0	0	0	2	0	0	0	0	2	0	2	2 (28 Aug)	1	1	28 Aug	28 Aug
70.	Little Tern	0	0	0	129	181	6	16	28	1	4	0	0	365	145	220	72 (23 Apr)	18	33	16 Apr	2 Oct
71.	Caspian Tern	0	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (30 Jul)	1	1	30 Jul	30 Jul
72.	Black Tern	0	0	0	21	33	2	82	5159	62	0	0	0	5359	2781	2578	2262 (16 Aug)	20	35	19 Apr	25 Sep
73.	Arctic Tern	0	0	0	62	21	0	2	7	11	0	1	0	104	19	85	27 (24 Apr)	9	17	17 Apr	18 Nov
74.	Common/Arctic Tern	0	0	0	63	17	0	0	1176	164	0	0	0	1420	115	1305	1176 (16 Aug)	7	12	12 Apr	30 Sep
75.	Common Tern	0	0	18	2359	3765	1022	866	8091	4633	210	5	0	20969	7918	13051	2025 (27 Aug)	54	96	5 Mar	1 Nov
76.	Sandwich Tern	1	0	411	3186	4522	3159	1876	9890	3955	841	15	0	27856	8226	19630	4059 (23 Aug)	63	112	4 Jan	17 Nov
77.	Little Gull	5	2	337	3506	2016	0	2	5	3	37	30	3	5946	195	5751	1948 (30 Apr)	25	45	4 Jan	1 Dec
78.	Ross' Gull	0	0	0	0	0	0	0	0	0	0	0	1	1	0	1	1 (26 Dec)	1	1	26 Dec	26 Dec
79.	Kittiwake	333	0	6	4	1	0	0	2	0	167	244	189	946	472	474	159 (1 Dec)	22	39	1 Jan	24 Dec
80.	Sabine's Gull	0	0	0	0	0	0	0	0	0	1	0	0	1	0	1	1 (22 Oct)	1	1	22 Oct	22 Oct
81.	Black-headed Gull	2287	2154	1477	447	353	1951	9109	6267	2958	2866	2445	1988	34302	19359	14943	1969 (9 Jul)	97	173	1 Jan	31 Dec
82.	Mediterranean Gull	0	0	1	0	1	5	10	2	1	0	0	0	20	11	9	6 (3 Jul)	6	11	27 Mar	30 Sep
83.	Common Gull	739	631	1064	780	1166	237	578	229	325	343	733	737	7562	2674	4888	498 (1 May)	97	173	1 Jan	31 Dec
84.	Caspian Gull	0	1	2	0	0	3	0	0	0	0	0	0	6	6	0	2 (19 Jun)	3	5	26 Feb	19 Jun
85.	Great Black-backed Gull	626	142	302	197	118	65	57	116	101	213	309	347	2593	988	1605	119 (2 Jan)	96	172	1 Jan	31 Dec
86.	Glaucous Gull	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (25 Sep)	1	1	25 Sep	25 Sep
87.	Lesser Black-backed Gull	30	200	1622	7792	4808	4466	4999	1965	472	218	63	25	26660	5521	21139	1138 (17 Jul)	91	163	1 Jan	26 Dec
88.	Iceland Gull	0	0	0	0	0	0	0	1	1	0	0	0	2	1	1	1 (28 Aug)	1	2	28 Aug	4 Sep
89.	Long-tailed Skua	0	0	0	0	0	0	0	3	0	0	0	0	3	1	2	1 (16 Aug)	2	3	16 Aug	30 Aug
90.	Arctic Skua	0	0	15	7	12	0	0	5	48	14	6	0	107	35	72	15 (27 Mar)	18	32	27 Mar	17 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Pomarine Skua	0	0	0	0	0	0	0	3	2	0	1	0	6	2	4	1 (16 Aug)	3	6	16 Aug	5 Nov
92.	Great Skua	2	0	0	1	2	0	0	1	4	4	1	0	15	9	6	2 (9 Jan)	6	11	9 Jan	17 Nov
93.	Razorbill	0	1	0	0	0	0	0	0	0	17	6	5	29	8	21	11 (12 Oct)	8	14	19 Feb	25 Dec
94.	Razorbill/Guillemot	8	21	0	7	1	0	0	0	327	443	328	82	1217	596	621	292 (30 Sep)	31	55	9 Jan	25 Dec
95.	Little Auk	0	0	0	0	0	0	0	0	0	1	6	1	8	6	2	5 (19 Nov)	2	4	11 Oct	18 Dec
96.	Guillemot	4	8	2	2	0	1	0	0	44	222	113	39	435	131	304	90 (11 Oct)	32	58	8 Jan	28 Dec
97.	Red-throated Diver	95	42	202	171	26	0	1	1	45	53	278	431	1345	192	1153	172 (11 Dec)	62	111	1 Jan	28 Dec
98.	Black-throated Diver	6	1	8	13	1	0	0	0	3	2	8	8	50	7	43	4 (9 Apr)	19	34	4 Jan	28 Dec
99.	diver sp.	79	2	15	24	2	0	0	0	0	6	14	26	168	56	112	29 (30 Jan)	12	22	1 Jan	16 Dec
100.	Leach's Petrel	0	0	0	0	0	0	0	0	0	0	1	0	1	0	1	1 (6 Nov)	1	1	6 Nov	6 Nov
101.	Fulmar	0	0	1	0	0	0	0	0	0	0	0	2	3	3	0	2 (1 Dec)	1	2	27 Mar	1 Dec
102.	Sooty Shearwater	0	0	0	0	0	0	0	1	0	0	0	1	2	1	1	1 (16 Aug)	1	2	16 Aug	1 Dec
103.	Gannet	200	13	104	300	62	7	13	93	96	78	43	104	1113	313	800	142 (7 Apr)	54	97	1 Jan	26 Dec
104.	Cormorant	2090	514	2799	4939	6751	9502	14174	2719	1399	420	182	861	46350	23418	22932	3968 (26 Jun)	97	174	1 Jan	31 Dec
105.	Shag	0	1	0	0	0	0	0	0	0	0	0	2	3	2	1	1 (10 Feb)	2	3	10 Feb	21 Dec
106.	Spoonbill	0	0	0	1	4	5	9	3	15	53	0	0	90	76	14	53 (2 Oct)	10	18	21 Apr	2 Oct
107.	Grey Heron	2	0	1	3	0	3	6	1	9	3	0	2	30	17	13	6 (18 Sep)	10	18	2 Jan	11 Dec
108.	Osprey	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (4 Sep)	1	1	4 Sep	4 Sep
109.	Sparrowhawk	0	0	0	3	1	0	0	0	6	0	2	0	12	8	4	3 (22 Sep)	5	9	17 Apr	20 Nov
110.	Goshawk	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (4 Sep)	1	1	4 Sep	4 Sep
111.	Marsh Harrier	0	0	1	6	2	2	4	7	1	0	0	0	23	13	10	6 (21 Aug)	8	15	19 Mar	17 Sep
112.	Hen Harrier	0	0	0	1	1	0	0	0	0	0	2	2	6	3	3	2 (10 Nov)	2	4	24 Apr	11 Dec
113.	Black Kite	0	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (24 Jul)	1	1	24 Jul	24 Jul
114.	Common Buzzard	0	0	0	0	7	0	0	0	14	0	0	0	21	6	15	13 (4 Sep)	2	4	13 May	18 Sep
115.	Short-eared Owl	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (13 May)	1	1	13 May	13 May
116.	Kestrel	2	1	1	0	9	4	2	2	7	0	0	2	30	14	16	4 (13 May)	13	23	1 Jan	25 Dec
117.	Red-footed Falcon	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (11 Sep)	1	1	11 Sep	11 Sep
118.	Merlin	0	0	0	0	1	0	0	0	0	0	1	1	3	2	1	1 (3 May)	2	3	3 May	13 Dec
119.	Hobby	0	0	0	0	2	0	0	0	2	0	0	0	4	3	1	1 (13 May)	2	4	13 May	18 Sep
120.	Peregrine	0	1	0	0	0	0	1	1	1	0	2	2	8	6	2	1 (22 Feb)	4	8	22 Feb	25 Dec
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Magpie	0	0	43	0	0	0	0	0	0	0	0	0	43	3	40	41 (20 Mar)	1	2	8 Mar	20 Mar
122.	Jackdaw	0	8	5	2	17	0	0	0	0	3	0	0	35	10	25	8 (26 Feb)	5	9	26 Feb	11 Oct
123.	Carrion Crow	4	5	23	37	9	2	0	0	1	0	3	3	87	12	75	10 (19 Apr)	16	29	6 Jan	25 Dec
124.	Great Tit	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (24 Apr)	1	1	24 Apr	24 Apr
125.	Wood Lark	0	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (9 Mar)	1	1	9 Mar	9 Mar
126.	Skylark	0	0	0	0	0	0	0	0	0	70	35	0	105	70	35	69 (29 Oct)	2	3	9 Oct	22 Nov
127.	Sand Martin	0	0	0	8	1	1	3	0	0	0	0	0	13	1	12	4 (24 Apr)	3	6	16 Apr	10 Jul
128.	Swallow	0	0	5	77	294	118	75	165	111	1	0	0	846	264	582	151 (21 Aug)	29	52	31 Mar	4 Oct
129.	House Martin	0	0	0	2	4	8	5	31	10	0	0	0	60	36	24	29 (21 Aug)	7	13	27 Apr	11 Sep
130.	Starling	0	34	23	0	2	154	66	39	23	10715	25682	144	36882	36493	389	16723 (20 Nov)	21	37	8 Feb	25 Dec
131.	Song Thrush	0	1	0	0	0	0	0	0	0	37	0	0	38	38	0	15 (9 Oct)	2	4	13 Feb	29 Oct
132.	Mistle Thrush	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	2 (29 Oct)	1	1	29 Oct	29 Oct
133.	Redwing	0	0	0	0	0	0	0	0	0	148	7	86	241	240	1	100 (29 Oct)	4	7	9 Oct	26 Dec
134.	Blackbird	0	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (12 Nov)	1	1	12 Nov	12 Nov
135.	Fieldfare	0	1	0	0	0	0	0	0	0	5	18	251	275	230	45	158 (25 Dec)	4	7	13 Feb	26 Dec
136.	Wheatear	0	0	0	0	0	0	0	0	2	0	0	0	2	0	2	1 (4 Sep)	1	2	4 Sep	11 Sep
137.	Blue-headed Wagtail	0	0	0	6	2	0	0	74	2	0	0	0	84	59	25	65 (21 Aug)	4	8	3 Apr	22 Sep
138.	Grey-headed Wagtail	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (13 May)	1	1	13 May	13 May
139.	Yellow wagtail sp.	0	0	0	1	3	0	0	0	4	0	0	0	8	4	4	4 (18 Sep)	2	4	24 Apr	18 Sep
140.	White Wagtail	0	0	7	4	3	0	2	0	2	1	0	0	19	10	9	4 (20 Mar)	6	11	19 Mar	6 Oct
141.	alba wagtail sp.	0	0	1	8	0	0	0	0	0	0	0	0	9	0	9	5 (16 Apr)	2	4	22 Mar	16 Apr
142.	Pied Wagtail	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (14 Apr)	1	1	14 Apr	14 Apr
143.	Meadow Pipit	0	1	13	89	72	0	3	6	26	148	0	6	364	194	170	134 (29 Oct)	22	40	22 Feb	16 Dec
144.	Rock Pipit	0	0	1	0	0	0	0	0	0	1	0	0	2	0	2	1 (22 Mar)	1	2	22 Mar	15 Oct
145.	Chaffinch	0	0	0	1	0	0	0	0	2	7	2	0	12	11	1	7 (29 Oct)	2	4	3 Apr	20 Nov
146.	Greenfinch	0	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (19 Mar)	1	1	19 Mar	19 Mar
147.	Linnet	0	0	5	25	247	78	5	0	0	0	0	0	360	121	239	68 (13 May)	17	30	31 Mar	17 Jul
148.	Goldfinch	0	0	0	4	7	0	0	2	0	0	0	0	13	4	9	5 (13 May)	3	6	3 Apr	14 Aug
149.	Siskin	0	9	0	0	0	0	0	0	0	3	0	0	12	12	0	9 (22 Feb)	1	2	22 Feb	18 Oct
150.	Reed Bunting	0	0	1	1	0	0	0	0	0	0	0	0	2	0	2	1 (19 Mar)	1	2	19 Mar	17 Apr
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Harbour Porpoise	20	17	22	2	3	11	13	9	7	1	2	24	131	57	74	19 (20 Dec)	23	41	1 Jan	26 Dec
2.	Grey seal	8	2	3	2	1	2	3	3	6	1	1	4	36	12	24	3 (6 Jan)	15	27	1 Jan	25 Dec
3.	Common Seal	119	68	79	19	40	17	33	27	57	13	48	106	626	243	383	28 (6 Mar)	65	116	1 Jan	31 Dec
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Small Tortoiseshell	0	0	0	0	0	1	0	1	0	0	0	0	2	2	0	1 (4 Jun)	1	2	4 Jun	21 Aug
2.	European Peacock	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (4 Sep)	1	1	4 Sep	4 Sep
3.	Large White	0	0	0	0	2	0	12	0	22	0	0	0	36	11	25	13 (8 Sep)	6	10	31 May	20 Sep
4.	Green-veined White	0	0	0	0	5	0	0	0	1	0	0	0	6	3	3	5 (13 May)	1	2	13 May	8 Sep
5.	Small White	0	0	0	1	7	7	18	9	142	0	0	0	184	82	102	82 (18 Sep)	11	20	19 Apr	25 Sep
6.	Red Admiral	0	0	0	0	0	7	11	0	4	1	0	0	23	12	11	6 (24 Jul)	6	11	16 Jun	9 Oct
7.	Small Heath	0	0	0	0	0	8	46	0	9	0	0	0	63	34	29	33 (17 Jul)	5	9	16 Jun	8 Sep
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Bumblebee sp.	0	2	2	20	32	169	243	181	65	0	0	0	714	358	356	129 (14 Aug)	30	54	27 Feb	25 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	11661	8178	28837	32698	33379	22349	34617	37760	17382	22165	32812	8670	290508	124854	165654		100	179
	Observation hours	70:00	42:30	75:00	84:30	95:00	64:00	79:00	72:00	81:30	45:30	66:30	62:30	838:00

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Trektellen

Totals Huisduinen (zeetrek) 2021