Totals Maasvlakte II 2020

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	0	0	66	407	170	0	0	0	22	2235	166	6	3072	2425	647	2030 (12 Oct)	43	22	8 Mar	27 Dec
2.	Black Brant	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (20 Nov)	2	1	20 Nov	20 Nov
3.	Canada Goose	0	0	0	0	0	0	0	0	3	0	0	0	3	3	0	3 (20 Sep)	2	1	20 Sep	20 Sep
4.	Barnacle Goose	0	0	0	0	0	0	0	0	0	0	2	0	2	0	2	2 (29 Nov)	2	1	29 Nov	29 Nov
5.	Greylag Goose	0	0	2	0	0	0	0	0	0	0	13	0	15	5	10	9 (29 Nov)	8	4	15 Mar	29 Nov
6.	goose sp.	0	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (1 Mar)	2	1	1 Mar	1 Mar
7.	Eurasian White-fronted Goose	40	0	0	0	0	0	0	0	0	0	0	0	40	0	40	40 (26 Jan)	2	1	26 Jan	26 Jan
8.	Egyptian Goose	25	0	0	0	0	0	0	0	0	0	10	2	37	16	21	25 (26 Jan)	6	3	26 Jan	6 Dec
9.	Shelduck	0	0	0	2	3	0	0	1	0	10	18	2	36	34	2	13 (22 Nov)	22	11	3 Apr	6 Dec
10.	Shoveler	0	0	0	0	0	0	0	0	0	1	5	0	6	6	0	5 (15 Nov)	4	2	8 Oct	15 Nov
11.	Wigeon	6	0	0	4	0	0	0	0	4	5	0	84	103	99	4	70 (13 Dec)	24	12	5 Jan	27 Dec
12.	Mallard	0	0	0	0	0	0	0	0	0	1	1	0	2	1	1	1 (12 Oct)	4	2	12 Oct	29 Nov
13.	Pintail	0	0	0	0	0	0	0	0	0	11	9	0	20	20	0	11 (7 Oct)	4	2	7 Oct	21 Nov
14.	Teal	0	0	0	2	0	0	0	0	13	8	3	0	26	22	4	6 (26 Sep)	18	9	3 Apr	21 Nov
15.	duck sp.	5	0	0	0	0	0	0	0	2	4	6	0	17	17	0	5 (19 Jan)	12	6	19 Jan	29 Nov
16.	Scaup	6	0	0	0	0	0	0	0	0	0	0	0	6	6	0	6 (5 Jan)	2	1	5 Jan	5 Jan
17.	Eider	3	0	16	7	1	0	0	0	3	7	38	9	84	60	24	15 (1 Mar)	35	18	12 Jan	26 Dec
18.	Velvet Scoter	0	0	0	0	0	0	0	0	0	2	4	1	7	7	0	4 (22 Nov)	8	4	4 Oct	26 Dec
19.	Common Scoter	64	0	82	50	0	0	0	38	142	486	1821	170	2853	1323	1530	1350 (22 Nov)	82	42	5 Jan	27 Dec
20.	Long-tailed Duck	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (15 Nov)	2	1	15 Nov	15 Nov
21.	Goldeneye	0	0	0	0	0	0	0	0	0	0	1	1	2	2	0	1 (22 Nov)	4	2	22 Nov	26 Dec
22.	Goosander	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (22 Nov)	2	1	22 Nov	22 Nov
23.	Red-breasted Merganser	14	0	11	10	0	0	0	0	1	37	63	14	150	119	31	25 (19 Nov)	51	26	5 Jan	26 Dec
24.	Swift	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (26 Aug)	2	1	26 Aug	26 Aug
25.	Great Crested Grebe	5	0	5	0	0	0	0	0	3	10	9	1	33	30	3	4 (8 Mar)	37	19	5 Jan	26 Dec
26.	Oystercatcher	2	0	0	1	9	0	0	5	4	14	7	1	43	39	4	14 (11 Oct)	27	14	26 Jan	6 Dec
27.	Grey Plover	0	0	0	0	0	0	0	65	1	11	0	0	77	77	0	51 (26 Aug)	12	6	23 Aug	29 Oct
28.	Ringed Plover	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (26 Aug)	2	1	26 Aug	26 Aug
29.	Whimbrel	0	0	0	0	0	0	0	5	0	0	0	0	5	5	0	5 (26 Aug)	2	1	26 Aug	26 Aug
30.	Curlew	0	0	1	0	0	0	0	0	0	0	12	0	13	13	0	9 (13 Nov)	8	4	15 Mar	13 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Bar-tailed Godwit	0	0	0	0	0	0	0	225	2	0	6	0	233	233	0	225 (26 Aug)	6	3	26 Aug	15 Nov
32.	Redshank	0	0	0	0	0	0	0	0	0	2	3	0	5	5	0	3 (1 Nov)	6	3	4 Oct	1 Nov
33.	Turnstone	0	0	0	0	0	0	0	7	3	0	2	0	12	10	2	4 (30 Aug)	10	5	26 Aug	4 Nov
34.	Knot	0	0	0	0	0	0	0	6	4	0	2	0	12	12	0	6 (26 Aug)	6	3	26 Aug	3 Nov
35.	wader sp.	0	0	0	0	0	0	0	4	5	14	119	0	142	139	3	100 (4 Nov)	25	13	23 Aug	19 Nov
36.	Sanderling	0	0	0	0	0	0	0	32	27	30	196	0	285	282	3	80 (18 Nov)	31	16	23 Aug	20 Nov
37.	Dunlin	0	0	8	0	0	0	0	2	63	126	149	1	349	341	8	83 (29 Oct)	37	19	15 Mar	26 Dec
38.	Purple Sandpiper	0	0	0	0	0	0	0	0	5	3	0	0	8	8	0	3 (27 Sep)	8	4	26 Sep	10 Oct
39.	Little Tern	0	0	0	0	3	0	0	1	0	0	0	0	4	1	3	3 (2 May)	4	2	2 May	26 Aug
40.	Black Tern	0	0	0	0	2	0	0	6	0	0	0	0	8	6	2	6 (26 Aug)	4	2	17 May	26 Aug
41.	Arctic Tern	0	0	0	0	0	0	0	3	1	0	0	0	4	4	0	3 (26 Aug)	4	2	26 Aug	25 Sep
42.	Common/Arctic Tern	0	0	0	0	155	0	0	0	1	0	0	0	156	37	119	141 (24 May)	6	3	17 May	25 Sep
43.	Common Tern	0	0	0	0	374	0	0	255	1	0	0	0	630	372	258	247 (17 May)	14	7	2 May	6 Sep
44.	Sandwich Tern	0	0	0	0	9	0	0	165	507	1036	3	0	1720	1670	50	453 (10 Oct)	49	25	2 May	13 Nov
45.	Little Gull	0	0	0	0	0	0	0	6	8	1196	296	0	1506	1486	20	520 (25 Oct)	35	18	26 Aug	22 Nov
46.	Kittiwake	9	0	5	0	0	0	0	7	3	33	993	139	1189	1164	25	401 (22 Nov)	45	23	19 Jan	27 Dec
47.	Sabine's Gull	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (29 Oct)	2	1	29 Oct	29 Oct
48.	Black-headed Gull	0	0	0	11	0	0	0	0	479	5	465	5	965	943	22	285 (4 Nov)	29	15	3 Apr	26 Dec
49.	Mediterranean Gull	0	0	0	1	0	0	0	0	0	0	1	0	2	2	0	1 (3 Apr)	4	2	3 Apr	4 Nov
50.	Common Gull	8	0	0	9	3	0	0	0	133	2	312	11	478	463	15	95 (4 Nov)	33	17	19 Jan	26 Dec
51.	Herring Gull	0	0	0	22	0	0	0	0	58	0	27	0	107	85	22	58 (24 Sep)	8	4	3 Apr	20 Nov
52.	Yellow-legged Gull	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (26 Aug)	2	1	26 Aug	26 Aug
53.	Great Black-backed Gull	0	0	0	2	0	0	0	0	83	0	38	6	129	114	15	51 (27 Sep)	16	8	3 Apr	26 Dec
54.	Lesser Black-backed Gull	0	0	0	4	0	0	0	0	320	0	51	0	375	350	25	180 (27 Sep)	16	8	3 Apr	21 Nov
55.	skua sp.	0	0	0	0	0	0	0	0	1	5	1	0	7	7	0	1 (27 Sep)	14	7	27 Sep	22 Nov
56.	Arctic Skua	0	0	0	0	0	0	0	13	13	27	2	0	55	54	1	16 (7 Oct)	18	9	26 Aug	1 Nov
57.	Pomarine Skua	0	0	0	0	0	0	0	0	2	4	0	0	6	5	1	2 (25 Sep)	8	4	25 Sep	11 Oct
58.	Great Skua	0	0	0	0	0	0	0	2	0	6	1	1	10	9	1	3 (4 Oct)	14	7	26 Aug	26 Dec
59.	Razorbill	11	0	0	0	0	0	0	0	1	6	1	56	75	61	14	56 (20 Dec)	18	9	19 Jan	20 Dec
60.	Razorbill/Guillemot	184	0	1	0	0	0	0	0	6	132	365	707	1395	1129	266	524 (20 Dec)	51	26	19 Jan	27 Dec
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Little Auk	0	0	0	0	0	0	0	0	0	0	2	1	3	3	0	1 (3 Nov)	6	3	3 Nov	13 Dec
62.	Guillemot	0	0	0	0	0	0	0	0	1	0	3	2	6	5	1	2 (22 Nov)	8	4	25 Sep	20 Dec
63.	Red-throated Diver	60	0	3	1	4	0	0	0	20	86	739	480	1393	1288	105	246 (22 Nov)	73	37	5 Jan	27 Dec
64.	Black-throated Diver	1	0	0	0	0	0	0	0	0	2	1	3	7	7	0	1 (5 Jan)	14	7	5 Jan	26 Dec
65.	Great Northern Diver	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (22 Nov)	2	1	22 Nov	22 Nov
66.	diver sp.	28	0	0	0	0	0	0	0	0	9	6	4	47	33	14	19 (19 Jan)	16	8	5 Jan	13 Dec
67.	Leach's Petrel	0	0	0	0	0	0	0	0	4	1	0	0	5	3	2	2 (25 Sep)	6	3	25 Sep	7 Oct
68.	Fulmar	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (26 Aug)	2	1	26 Aug	26 Aug
69.	Sooty Shearwater	0	0	0	0	0	0	0	0	20	8	1	0	29	29	0	20 (25 Sep)	10	5	25 Sep	22 Nov
70.	Manx Shearwater	0	0	0	0	0	0	0	0	9	0	0	0	9	7	2	9 (25 Sep)	2	1	25 Sep	25 Sep
71.	Balearic Shearwater	0	0	0	0	0	0	0	1	1	0	0	0	2	2	0	1 (26 Aug)	4	2	26 Aug	25 Sep
72.	Gannet	252	0	0	0	15	0	0	24	34	248	259	658	1490	1068	422	345 (26 Dec)	84	43	5 Jan	26 Dec
73.	Cormorant	12	0	18	4	81	0	0	19	19	89	160	50	452	315	137	49 (1 Nov)	82	42	5 Jan	26 Dec
74.	Grey Heron	0	0	0	0	0	0	0	0	1	0	0	0	1	0	1	1 (13 Sep)	2	1	13 Sep	13 Sep
75.	Sparrowhawk	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (3 Nov)	2	1	3 Nov	3 Nov
76.	Hen Harrier	0	0	0	0	0	0	0	0	0	2	4	1	7	6	1	4 (4 Nov)	6	3	25 Oct	6 Dec
77.	Short-eared Owl	0	0	0	0	0	0	0	0	0	1	0	0	1	0	1	1 (25 Oct)	2	1	25 Oct	25 Oct
78.	Merlin	0	0	0	0	0	0	0	0	0	1	0	0	1	0	1	1 (8 Oct)	2	1	8 Oct	8 Oct
79.	Magpie	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (26 Sep)	2	1	26 Sep	26 Sep
80.	Jackdaw	0	0	0	0	0	0	0	0	0	15	25	0	40	15	25	25 (4 Nov)	4	2	30 Oct	4 Nov
81.	Carrion Crow	0	0	0	0	1	0	0	0	1	0	4	0	6	4	2	3 (3 Nov)	8	4	17 May	29 Nov
82.	Skylark	0	0	0	0	0	0	0	0	0	1	36	0	37	37	0	30 (4 Nov)	8	4	4 Oct	18 Nov
83.	Sand Martin	0	0	0	0	1	0	0	0	0	0	0	0	1	1	0	1 (2 May)	2	1	2 May	2 May
84.	Swallow	0	0	0	0	8	0	0	0	2	0	0	0	10	4	6	7 (17 May)	6	3	17 May	6 Sep
85.	Starling	0	0	0	0	0	0	0	0	0	767	5234	0	6001	5877	124	4491 (1 Nov)	24	12	12 Oct	29 Nov
86.	Song Thrush	0	0	0	0	0	0	0	0	6	0	0	0	6	6	0	6 (30 Sep)	2	1	30 Sep	30 Sep
87.	Redwing	0	0	0	0	0	0	0	0	0	85	2	0	87	87	0	85 (12 Oct)	4	2	12 Oct	1 Nov
88.	Grey Wagtail	0	0	0	0	0	0	0	0	0	1	0	0	1	0	1	1 (7 Oct)	2	1	7 Oct	7 Oct
89.	White Wagtail	0	0	0	0	1	0	0	1	0	2	0	0	4	4	0	1 (17 May)	8	4	17 May	11 Oct
90.	Meadow Pipit	0	0	0	0	0	0	0	1	36	32	0	0	69	69	0	18 (13 Sep)	24	12	27 Aug	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.	Rock Pipit	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (7 Oct)	2	1	7 Oct	7 Oct
92.	Chaffinch	0	0	0	0	0	0	0	0	0	0	122	0	122	107	15	119 (1 Nov)	4	2	1 Nov	4 Nov
93.	Linnet	0	0	0	0	3	0	0	0	0	0	0	0	3	3	0	3 (17 May)	2	1	17 May	17 May
94.	Lesser Redpoll	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (7 Oct)	2	1	7 Oct	7 Oct
95.	Siskin	0	0	0	0	0	0	0	0	2	12	0	0	14	14	0	12 (10 Oct)	4	2	26 Sep	10 Oct
96.	Lapland Bunting	0	0	0	0	0	0	0	0	0	3	1	0	4	3	1	3 (7 Oct)	4	2	7 Oct	4 Nov
97.	Snow Bunting	0	0	0	0	0	0	0	0	0	0	8	0	8	8	0	8 (18 Nov)	2	1	18 Nov	18 Nov
98.	Reed Bunting	0	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (4 Nov)	2	1	4 Nov	4 Nov
99.	passerine sp.	0	0	0	0	0	0	0	0	3	1	0	0	4	4	0	3 (27 Sep)	4	2	27 Sep	25 Oct
	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	0	0	0	0	0	0	0	1	1	2	2	0	6	4	2	2 (19 Nov)	10	5	26 Aug	19 Nov
2.	Common Seal	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (19 Nov)	2	1	19 Nov	19 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	735	0	220	537	843	0	0	899	2085	6840	11838	2416	26413	22350	4063		100	51
	Observation hours	6:55	0:00	6:00	1:00	4:45	0:00	0:00	18:25	22:00	34:26	27:46	8:48	130:05

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Trektellen

Totals Maasvlakte II 2020