Totals Maasvlakte II 2017

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	27	849	0	72	34	0	0	0	45	3269	98	0	4394	3411	983	850 (28 Oct)	40	23	4 Jan	26 Nov
2.	Greylag Goose	0	0	25	11	2	0	0	0	0	24	0	0	62	45	17	24 (15 Oct)	14	8	5 Mar	15 Oct
3.	goose sp.	10	70	2	0	0	0	0	0	0	0	0	0	82	10	72	70 (19 Feb)	5	3	1 Jan	19 Mar
4.	Pink-footed Goose	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	2 (5 Oct)	2	1	5 Oct	5 Oct
5.	Mute Swan	0	0	0	0	0	0	0	0	0	0	0	8	8	8	0	8 (17 Dec)	2	1	17 Dec	17 Dec
6.	Egyptian Goose	0	0	0	2	0	0	0	0	0	0	0	7	9	5	4	4 (17 Dec)	7	4	9 Apr	24 Dec
7.	Shelduck	0	0	9	10	6	0	0	0	12	160	1	0	198	186	12	134 (6 Oct)	29	17	5 Mar	26 Nov
8.	Garganey	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (11 Sep)	2	1	11 Sep	11 Sep
9.	Shoveler	0	0	1	65	0	0	0	0	7	0	0	0	73	8	65	58 (9 Apr)	10	6	12 Mar	14 Sep
10.	Wigeon	0	1	5	10	0	0	0	0	29	36	4	190	275	259	16	95 (8 Dec)	34	20	19 Feb	24 Dec
11.	Mallard	0	0	0	0	0	0	0	0	1	6	0	1	8	8	0	3 (20 Oct)	9	5	9 Sep	24 Dec
12.	Pintail	0	0	0	0	0	0	0	0	0	120	0	0	120	120	0	90 (8 Oct)	5	3	8 Oct	28 Oct
13.	Teal	1	5	91	84	0	0	0	0	36	8	5	42	272	97	175	89 (12 Mar)	29	17	8 Jan	31 Dec
14.	duck sp.	3	0	16	0	0	0	0	0	5	1	0	3	28	8	20	11 (12 Mar)	14	8	1 Jan	17 Dec
15.	Tufted Duck	0	0	0	0	2	0	0	0	3	4	0	0	9	7	2	4 (28 Oct)	5	3	7 May	28 Oct
16.	Scaup	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (5 Oct)	2	1	5 Oct	5 Oct
17.	Eider	14	26	19	10	2	0	0	0	4	50	12	23	160	106	54	18 (26 Feb)	52	30	8 Jan	31 Dec
18.	Velvet Scoter	4	2	0	3	0	0	0	0	0	2	0	1	12	9	3	2 (1 Jan)	14	8	1 Jan	4 Dec
19.	Common Scoter	255	164	118	456	142	0	0	39	884	982	103	139	3282	1352	1930	403 (8 Oct)	84	49	1 Jan	31 Dec
20.	Long-tailed Duck	0	0	1	1	0	0	0	0	0	1	0	0	3	0	3	1 (12 Mar)	5	3	12 Mar	30 Oct
21.	Goldeneye	4	0	4	0	0	0	0	0	0	0	0	0	8	1	7	4 (8 Jan)	5	3	8 Jan	12 Mar
22.	Goosander	0	0	1	0	0	0	0	0	0	0	0	0	1	1	0	1 (12 Mar)	2	1	12 Mar	12 Mar
23.	Red-breasted Merganser	16	29	65	52	7	0	0	0	16	77	5	2	269	144	125	53 (26 Mar)	55	32	1 Jan	31 Dec
24.	Swift	0	0	0	2	0	0	0	0	1	0	0	0	3	1	2	2 (30 Apr)	3	2	30 Apr	11 Sep
25.	Great Crested Grebe	10	11	12	3	1	0	0	3	0	16	10	39	105	88	17	19 (8 Dec)	50	29	1 Jan	31 Dec
26.	Oystercatcher	0	0	7	46	10	0	0	4	8	11	0	1	87	59	28	27 (30 Apr)	24	14	12 Mar	24 Dec
27.	Avocet	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (17 Sep)	2	1	17 Sep	17 Sep
28.	Grey Plover	0	0	0	4	8	0	0	0	8	10	0	0	30	19	11	7 (7 May)	16	9	30 Apr	20 Oct
29.	Golden Plover	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (17 Sep)	2	1	17 Sep	17 Sep
30.	Dotterel	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (27 Aug)	2	1	27 Aug	27 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Ringed Plover	0	0	0	0	1	0	0	1	27	20	0	0	49	49	0	20 (14 Sep)	12	7	14 May	8 Oct
32.	Whimbrel	0	0	0	9	7	0	0	0	0	0	0	0	16	0	16	7 (30 Apr)	5	3	16 Apr	7 May
33.	Curlew	0	0	3	0	0	0	0	0	13	27	0	0	43	43	0	10 (5 Oct)	19	11	5 Mar	28 Oct
34.	Bar-tailed Godwit	0	0	0	72	6	0	0	0	832	4	0	0	914	837	77	806 (14 Sep)	16	9	16 Apr	5 Oct
35.	Black-tailed Godwit	0	0	0	0	1	0	0	0	0	1	0	0	2	2	0	1 (7 May)	3	2	7 May	6 Oct
36.	Snipe	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (14 Sep)	2	1	14 Sep	14 Sep
37.	Grey Phalarope	0	0	0	0	0	0	0	0	2	3	0	0	5	5	0	2 (3 Oct)	7	4	14 Sep	5 Oct
38.	Redshank	0	0	0	0	0	0	0	0	17	0	0	0	17	17	0	10 (15 Sep)	3	2	3 Sep	15 Sep
39.	Greenshank	0	0	0	3	0	0	0	0	0	0	0	0	3	0	3	3 (30 Apr)	2	1	30 Apr	30 Apr
40.	Turnstone	0	0	0	1	0	0	0	1	8	5	1	0	16	15	1	8 (11 Sep)	10	6	30 Apr	12 Nov
41.	Knot	0	0	0	0	100	0	0	0	5	0	0	0	105	5	100	100 (7 May)	5	3	7 May	14 Sep
42.	Ruff	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (8 Oct)	2	1	8 Oct	8 Oct
43.	wader sp.	0	0	4	35	11	0	0	0	19	4	6	0	79	40	39	28 (9 Apr)	17	10	5 Mar	26 Nov
44.	Sanderling	0	0	0	3	65	0	0	0	198	53	0	0	319	249	70	175 (14 Sep)	31	18	30 Apr	29 Oct
45.	Dunlin	0	0	35	32	3	0	0	0	178	183	8	0	439	391	48	127 (15 Sep)	34	20	5 Mar	12 Nov
46.	Purple Sandpiper	0	0	0	0	0	0	0	0	1	1	0	0	2	2	0	1 (14 Sep)	3	2	14 Sep	28 Oct
47.	Little Stint	0	0	0	0	0	0	0	0	4	0	0	0	4	0	4	4 (15 Sep)	2	1	15 Sep	15 Sep
48.	Little Tern	0	0	0	10	0	0	0	0	11	0	0	0	21	11	10	9 (23 Apr)	10	6	16 Apr	17 Sep
49.	Gull-billed Tern	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (3 Sep)	2	1	3 Sep	3 Sep
50.	Black Tern	0	0	0	28	12	0	0	0	39	5	0	0	84	43	41	27 (23 Apr)	16	9	23 Apr	1 Oct
51.	Arctic Tern	0	0	0	0	0	0	0	0	31	5	0	0	36	36	0	30 (14 Sep)	10	6	13 Sep	28 Oct
52.	Common/Arctic Tern	0	0	0	0	14	0	0	0	93	0	0	0	107	93	14	50 (13 Sep)	9	5	7 May	15 Sep
53.	Common Tern	0	0	0	832	89	0	0	15	316	1	0	0	1253	406	847	436 (30 Apr)	21	12	2 Apr	6 Oct
54.	Sandwich Tern	0	0	0	348	17	0	0	93	1572	690	0	0	2720	2254	466	425 (3 Oct)	34	20	2 Apr	8 Oct
55.	Little Gull	0	0	0	419	0	0	0	0	4	372	7	2	804	385	419	373 (23 Apr)	33	19	2 Apr	8 Dec
56.	Kittiwake	30	0	0	0	0	0	0	0	2	417	193	5	647	580	67	116 (6 Oct)	34	20	4 Jan	8 Dec
57.	Sabine's Gull	0	0	0	0	0	0	0	0	2	5	0	0	7	7	0	2 (14 Sep)	9	5	14 Sep	27 Oct
58.	Black-headed Gull	37	0	350	0	3	0	0	0	29	2092	80	0	2591	2241	350	2000 (27 Oct)	17	10	22 Jan	26 Nov
59.	Mediterranean Gull	0	0	1	0	0	0	0	0	0	1	0	0	2	2	0	1 (12 Mar)	3	2	12 Mar	6 Oct
60.	Common Gull	0	0	0	0	0	0	0	0	0	1082	0	0	1082	1082	0	1000 (27 Oct)	3	2	8 Oct	27 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Caspian Gull	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (5 Oct)	3	2	5 Oct	27 Oct
62.	Great Black-backed Gull	0	0	0	0	0	0	0	0	0	73	0	0	73	73	0	73 (8 Oct)	2	1	8 Oct	8 Oct
63.	Long-tailed Skua	0	0	0	0	0	0	0	0	6	7	0	0	13	12	1	4 (14 Sep)	10	6	10 Sep	28 Oct
64.	skua sp.	1	0	0	0	0	0	0	0	23	47	1	0	72	70	2	32 (5 Oct)	24	14	4 Jan	19 Nov
65.	Arctic Skua	0	0	0	0	0	0	0	0	133	223	0	1	357	337	20	104 (5 Oct)	29	17	10 Sep	3 Dec
66.	Pomarine Skua	0	0	0	0	0	0	0	0	21	25	0	0	46	41	5	11 (22 Oct)	22	13	13 Sep	29 Oct
67.	Great Skua	0	0	0	0	0	0	0	0	293	168	0	0	461	456	5	276 (14 Sep)	26	15	10 Sep	29 Oct
68.	Razorbill	0	1	0	0	0	0	0	0	0	28	0	0	29	29	0	24 (25 Oct)	7	4	24 Feb	28 Oct
69.	Razorbill/Guillemot	137	8	3	0	0	0	0	0	6	388	434	49	1025	837	188	232 (26 Nov)	57	33	4 Jan	31 Dec
70.	Guillemot	6	0	0	0	0	0	0	0	5	193	7	1	212	210	2	180 (28 Oct)	24	14	15 Jan	8 Dec
71.	Red-throated Diver	124	13	17	7	0	0	0	0	13	149	117	242	682	586	96	60 (8 Dec)	76	44	1 Jan	31 Dec
72.	Black-throated Diver	0	1	0	0	0	0	0	0	0	6	7	0	14	13	1	5 (28 Oct)	10	6	12 Feb	26 Nov
73.	Great Northern Diver	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (28 Oct)	2	1	28 Oct	28 Oct
74.	diver sp.	44	2	0	0	0	0	0	0	0	12	116	489	663	626	37	218 (3 Dec)	36	21	8 Jan	24 Dec
75.	Wilson's Storm-Petrel	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (5 Oct)	2	1	5 Oct	5 Oct
76.	Leach's Petrel	0	0	0	0	0	0	0	0	3	54	1	0	58	58	0	24 (5 Oct)	14	8	14 Sep	13 Nov
77.	Fulmar	0	0	0	1	0	0	0	0	25	1	2	0	29	27	2	24 (14 Sep)	10	6	23 Apr	26 Nov
78.	Sooty Shearwater	0	0	0	0	0	0	0	0	13	8	0	0	21	21	0	6 (14 Sep)	12	7	11 Sep	22 Oct
79.	Manx Shearwater	0	0	0	0	0	0	0	0	54	3	0	0	57	55	2	39 (14 Sep)	14	8	9 Sep	5 Oct
80.	Balearic Shearwater	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (14 Sep)	2	1	14 Sep	14 Sep
81.	Gannet	108	5	5	8	14	0	0	2	457	1120	202	52	1973	1792	181	745 (5 Oct)	76	44	4 Jan	31 Dec
82.	Cormorant	50	19	97	612	269	0	0	5	89	185	20	10	1356	857	499	287 (16 Apr)	79	46	1 Jan	17 Dec
83.	Great White Egret	0	0	0	0	0	0	0	0	0	7	0	0	7	7	0	6 (20 Oct)	3	2	15 Oct	20 Oct
84.	Grey Heron	0	0	0	0	0	0	0	0	3	1	0	0	4	4	0	3 (17 Sep)	3	2	17 Sep	8 Oct
85.	Sparrowhawk	0	0	0	1	0	0	0	0	0	1	0	0	2	1	1	1 (2 Apr)	3	2	2 Apr	15 Oct
86.	Marsh Harrier	0	0	0	2	0	0	0	0	0	0	0	0	2	2	0	2 (30 Apr)	2	1	30 Apr	30 Apr
87.	Pallid Harrier	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (15 Oct)	2	1	15 Oct	15 Oct
88.	Short-eared Owl	0	0	0	0	0	0	0	0	1	0	0	0	1	0	1	1 (24 Sep)	2	1	24 Sep	24 Sep
89.	Kestrel	0	0	0	0	0	0	0	0	3	0	0	0	3	3	0	1 (15 Sep)	5	3	15 Sep	24 Sep
90.	Merlin	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (15 Oct)	3	2	15 Oct	29 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Hobby	0	0	0	1	0	0	0	0	0	0	0	0	1	1	0	1 (30 Apr)	2	1	30 Apr	30 Apr
92.	Peregrine	0	0	0	0	0	0	0	0	0	3	0	0	3	2	1	2 (28 Oct)	3	2	15 Oct	28 Oct
93.	Jackdaw	0	0	0	5	0	0	0	0	0	0	0	0	5	5	0	5 (30 Apr)	2	1	30 Apr	30 Apr
94.	Carrion Crow	0	0	8	13	0	0	0	0	0	0	0	1	22	10	12	8 (12 Mar)	9	5	12 Mar	17 Dec
95.	Skylark	0	0	1	1	0	0	0	0	1	211	0	0	214	213	1	150 (28 Oct)	12	7	12 Mar	28 Oct
96.	Swallow	0	0	0	9	40	0	0	9	26	0	0	0	84	44	40	20 (14 May)	21	12	9 Apr	17 Sep
97.	Starling	0	0	2	0	0	0	0	0	0	2837	676	0	3515	3448	67	2200 (6 Oct)	17	10	12 Mar	19 Nov
98.	Yellow wagtail sp.	0	0	0	0	0	0	0	0	9	0	0	0	9	6	3	9 (3 Sep)	2	1	3 Sep	3 Sep
99.	Grey Wagtail	0	0	0	0	0	0	0	0	0	5	0	0	5	5	0	2 (1 Oct)	5	3	1 Oct	27 Oct
100.	White Wagtail	0	0	0	2	0	0	0	0	8	1	0	0	11	11	0	4 (3 Sep)	9	5	2 Apr	15 Oct
101.	Meadow Pipit	0	0	2	0	0	0	0	0	55	103	0	0	160	156	4	54 (15 Oct)	19	11	12 Mar	28 Oct
102.	pipit sp.	0	0	2	0	0	0	0	0	0	0	0	0	2	2	0	2 (5 Mar)	2	1	5 Mar	5 Mar
103.	Chaffinch	0	0	0	1	0	0	0	0	0	107	0	0	108	107	1	107 (15 Oct)	3	2	30 Apr	15 Oct
104.	Linnet	0	0	0	1	0	0	0	0	42	0	0	0	43	43	0	42 (3 Sep)	3	2	9 Apr	3 Sep
105.	Lapland Bunting	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (1 Oct)	2	1	1 Oct	1 Oct
106.	Snow Bunting	0	0	0	0	0	0	0	0	0	3	0	120	123	50	73	100 (24 Dec)	5	3	27 Oct	24 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.	Harbour Porpoise	2	0	0	0	0	0	0	1	3	6	3	0	15	7	8	3 (5 Oct)	16	9	4 Jan	26 Nov
2.	Common Seal	0	0	0	1	0	0	0	0	0	1	0	0	2	1	1	1 (2 Apr)	3	2	2 Apr	22 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	883	1206	906	3288	866	0	0	174	5760	15736	2119	1428	32366	24994	7372		100	58
	Observation hours	10:24	5:14	7:15	10:50	5:20	0:00	0:00	2:00	60:16	52:10	11:35	10:10	175:14

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Trektellen

Totals Maasvlakte II 2017