Totals Katwijk - Savoy (zeetrek) 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	2	0	26	544	371	0	0	0	0	3066	58	3	4070	3131	939	3045 (12 Oct)	34	28	14 Jan	13 Dec
2.	Pale-bellied Brent Goose	0	0	0	1	1	0	0	0	0	0	0	0	2	0	2	1 (3 Apr)	2	2	3 Apr	13 May
3.	Canada Goose	0	1	8	2	0	0	0	0	0	8	0	0	19	17	2	8 (31 Mar)	5	4	29 Feb	11 Oct
4.	Barnacle Goose	162	0	0	2554	97	0	0	0	0	0	1	2	2816	39	2777	2170 (23 Apr)	20	16	7 Jan	19 Dec
5.	Greylag Goose	0	5	14	10	2	0	0	9	0	0	9	10	59	50	9	10 (8 Mar)	16	13	25 Feb	19 Dec
6.	Anser sp.	250	0	0	0	0	0	0	0	0	0	30	0	280	30	250	250 (11 Jan)	2	2	11 Jan	23 Nov
7.	goose sp.	0	0	0	0	0	0	0	0	0	360	0	0	360	360	0	310 (12 Oct)	2	2	10 Oct	12 Oct
8.	Pink-footed Goose	120	0	0	0	0	0	0	0	0	0	0	0	120	0	120	120 (11 Jan)	1	1	11 Jan	11 Jan
9.	Tundra Bean Goose	0	0	0	0	0	0	0	0	0	55	0	0	55	55	0	55 (12 Oct)	1	1	12 Oct	12 Oct
10.	Eurasian White-fronted Goose	0	0	0	0	0	0	0	0	0	0	47	0	47	47	0	37 (28 Nov)	2	2	28 Nov	29 Nov
11.	Mute Swan	0	0	0	0	28	0	0	0	2	0	0	0	30	0	30	14 (9 May)	5	4	6 May	4 Sep
12.	Egyptian Goose	1	5	0	2	10	0	0	0	0	5	10	4	37	10	27	10 (15 Nov)	10	8	7 Jan	19 Dec
13.	Shelduck	3	6	5	89	55	0	625	197	20	3	64	3	1070	291	779	150 (15 Jul)	65	53	11 Jan	6 Dec
14.	Garganey	0	0	3	2	1	0	0	0	0	0	0	0	6	1	5	2 (28 Mar)	5	4	8 Mar	5 May
15.	Shoveler	0	26	15	473	0	0	0	0	0	0	0	0	514	36	478	383 (5 Apr)	17	14	29 Feb	26 Apr
16.	Gadwall	4	0	5	25	4	0	4	7	4	4	7	0	64	35	29	15 (5 Apr)	28	23	7 Jan	23 Nov
17.	Wigeon	50	9	15	183	0	0	0	12	4	5	335	35	648	340	308	173 (3 Apr)	38	31	7 Jan	19 Dec
18.	Mallard	1	0	0	0	0	0	0	0	1	1	67	0	70	59	11	65 (29 Nov)	7	6	27 Jan	29 Nov
19.	Pintail	0	14	0	21	0	0	0	0	1	11	28	0	75	37	38	20 (29 Nov)	13	11	12 Feb	29 Nov
20.	Teal	1	15	10	304	4	0	10	188	22	4	87	0	645	289	356	139 (5 Apr)	48	39	7 Jan	29 Nov
21.	duck sp.	0	3	0	1	0	0	1	14	0	5	0	0	24	14	10	10 (29 Aug)	7	6	29 Feb	12 Oct
22.	Pochard	0	0	0	0	0	0	0	0	0	0	2	0	2	1	1	1 (28 Nov)	2	2	28 Nov	29 Nov
23.	Tufted Duck	2	7	0	0	0	0	6	5	2	2	11	0	35	25	10	9 (29 Nov)	11	9	27 Jan	29 Nov
24.	Scaup	0	0	0	13	0	0	0	0	2	0	0	4	19	9	10	13 (3 Apr)	4	3	3 Apr	13 Dec
25.	Aythya sp.	0	0	0	0	0	0	0	4	0	0	0	0	4	4	0	4 (24 Aug)	1	1	24 Aug	24 Aug
26.	Eider	8	9	35	53	24	0	10	0	21	7	25	1	193	71	122	14 (29 Mar)	54	44	7 Jan	6 Dec
27.	Velvet Scoter	19	0	0	7	0	0	0	0	0	0	7	9	42	15	27	9 (20 Jan)	13	11	11 Jan	19 Dec
28.	Common Scoter	112	115	351	594	573	0	322	96	32	139	1310	538	4182	1017	3165	656 (22 Nov)	95	78	7 Jan	19 Dec
29.	Long-tailed Duck	0	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 (14 Dec)	1	1	14 Dec	14 Dec
30.	Goldeneye	2	1	2	0	0	0	0	0	0	0	20	4	29	21	8	12 (28 Nov)	13	11	7 Jan	19 Dec
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Goosander	0	0	1	8	0	0	0	0	0	0	0	0	9	0	9	8 (16 Apr)	2	2	28 Mar	16 Apr
32.	Red-breasted Merganser	10	1	22	52	8	0	3	0	4	4	43	8	155	71	84	28 (17 Nov)	39	32	11 Jan	19 Dec
33.	Swift	0	0	0	0	2	0	1	0	0	0	0	0	3	1	2	2 (5 May)	2	2	5 May	29 Jul
34.	Woodpigeon	0	0	0	4	0	0	0	0	0	0	0	0	4	0	4	3 (23 Apr)	2	2	20 Apr	23 Apr
35.	Red-necked Grebe	0	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (20 Jul)	1	1	20 Jul	20 Jul
36.	Great Crested Grebe	153	106	6	16	21	0	5	3	5	4	37	32	388	330	58	95 (15 Jan)	60	49	7 Jan	19 Dec
37.	Slavonian Grebe	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (22 Nov)	1	1	22 Nov	22 Nov
38.	Oystercatcher	0	5	3	116	81	0	25	19	0	4	2	0	255	82	173	53 (25 Apr)	43	35	12 Feb	29 Nov
39.	Avocet	0	0	0	129	0	0	2	0	0	0	0	0	131	2	129	82 (5 Apr)	4	3	5 Apr	28 Jul
40.	Grey Plover	0	0	42	71	69	0	2	21	1	1	1	0	208	25	183	41 (29 Mar)	32	26	28 Mar	19 Nov
41.	Golden Plover	0	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (28 Mar)	1	1	28 Mar	28 Mar
42.	Dotterel	0	0	0	8	0	0	0	0	0	0	0	0	8	0	8	8 (20 Apr)	1	1	20 Apr	20 Apr
43.	Ringed Plover	0	0	0	56	220	0	0	217	10	0	0	0	503	227	276	192 (28 Aug)	24	20	5 Apr	9 Sep
44.	Lapwing	0	0	0	0	0	0	0	0	0	0	1	0	1	0	1	1 (28 Nov)	1	1	28 Nov	28 Nov
45.	Whimbrel	0	0	0	881	33	0	81	29	0	0	0	0	1024	109	915	300 (19 Apr)	30	25	5 Apr	28 Aug
46.	Curlew	0	0	7	39	6	0	18	9	1	0	1	0	81	30	51	18 (17 Apr)	18	15	8 Mar	4 Nov
47.	Bar-tailed Godwit	0	0	61	528	26	0	21	6	6	1	1	0	650	35	615	446 (25 Apr)	27	22	28 Mar	2 Nov
48.	Black-tailed Godwit	0	4	0	2	0	0	0	0	0	0	0	0	6	4	2	4 (29 Feb)	2	2	29 Feb	5 Apr
49.	Woodcock	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (23 Nov)	1	1	23 Nov	23 Nov
50.	Grey Phalarope	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (10 Oct)	1	1	10 Oct	10 Oct
51.	Redshank	0	1	1	36	5	0	1	3	4	0	0	0	51	8	43	13 (16 Apr)	17	14	29 Feb	6 Sep
52.	Greenshank	0	0	0	0	0	0	0	1	0	1	0	0	2	2	0	1 (29 Aug)	2	2	29 Aug	22 Oct
53.	Turnstone	0	0	0	3	3	0	6	34	7	0	0	0	53	47	6	10 (24 Aug)	15	12	19 Apr	5 Sep
54.	Knot	0	0	4	0	40	0	3	24	2	0	1	0	74	30	44	40 (13 May)	13	11	29 Mar	22 Nov
55.	Ruff	0	0	2	0	1	0	0	6	0	0	0	0	9	6	3	3 (21 Aug)	6	5	28 Mar	28 Aug
56.	wader sp.	0	0	0	46	98	0	0	100	1	7	1	0	253	109	144	76 (26 Aug)	17	14	16 Apr	22 Nov
57.	Curlew Sandpiper	0	0	0	0	0	0	0	1	1	0	0	0	2	2	0	1 (24 Aug)	2	2	24 Aug	6 Sep
58.	Sanderling	0	4	38	187	73	0	68	43	9	97	112	1	632	297	335	94 (22 Oct)	50	41	17 Feb	13 Dec
59.	Dunlin	0	3	21	129	28	0	9	56	3	66	355	0	670	482	188	120 (4 Nov)	49	40	15 Feb	23 Nov
60.	Purple Sandpiper	0	0	0	0	0	0	0	7	1	0	0	0	8	8	0	4 (23 Aug)	4	3	23 Aug	9 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Calidris sp.	0	0	0	15	65	0	90	24	8	4	0	0	206	35	171	68 (28 Jul)	20	16	17 Apr	29 Oct
62.	Little Tern	0	0	0	61	102	0	0	2	0	0	0	0	165	2	163	46 (5 May)	16	13	16 Apr	26 Aug
63.	Caspian Tern	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (17 Apr)	1	1	17 Apr	17 Apr
64.	Black Tern	0	0	0	371	97	0	1	1	1	0	0	0	471	4	467	176 (26 Apr)	20	16	17 Apr	12 Sep
65.	White-winged Black Tern	0	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (3 May)	1	1	3 May	3 May
66.	Arctic Tern	0	0	0	25	8	0	1	1	0	0	0	0	35	2	33	17 (18 Apr)	9	7	17 Apr	22 Aug
67.	Common/Arctic Tern	0	0	0	1310	418	0	0	102	8	0	0	0	1838	110	1728	850 (20 Apr)	23	19	20 Apr	25 Sep
68.	Common Tern	0	0	0	5682	3485	0	1229	42	0	0	0	0	10438	1283	9155	1375 (25 Apr)	35	29	5 Apr	29 Aug
69.	Sandwich Tern	0	0	0	664	572	0	535	103	571	91	0	0	2536	1056	1480	540 (25 Sep)	52	43	5 Apr	11 Oct
70.	Little Gull	0	1	4	3209	6	0	0	3	15	27	46	7	3318	97	3221	1680 (24 Apr)	38	31	12 Feb	13 Dec
71.	Kittiwake	832	37	0	0	0	0	1	2	0	134	1327	258	2591	2579	12	542 (19 Nov)	30	25	7 Jan	19 Dec
72.	Sabine's Gull	0	0	0	0	0	0	0	0	2	0	0	0	2	2	0	1 (5 Sep)	2	2	5 Sep	9 Sep
73.	Black-headed Gull	691	60	50	460	48	0	1163	1472	735	1111	2173	67	8030	7546	484	912 (4 Nov)	60	49	7 Jan	14 Dec
74.	Mediterranean Gull	0	0	0	8	2	0	8	3	1	0	0	0	22	10	12	4 (16 Apr)	17	14	3 Apr	25 Sep
75.	Common Gull	187	56	357	1469	37	0	52	14	58	345	889	225	3689	1842	1847	974 (3 Apr)	67	55	7 Jan	19 Dec
76.	Caspian Gull	0	1	0	0	0	0	0	0	0	0	1	0	2	2	0	1 (17 Feb)	2	2	17 Feb	17 Nov
77.	Herring Gull	548	122	59	31	0	0	56	9	38	201	279	12	1355	1265	90	458 (7 Jan)	28	23	7 Jan	13 Dec
78.	Great Black-backed Gull	110	126	13	11	2	0	4	5	0	111	226	16	624	590	34	89 (12 Feb)	52	43	7 Jan	19 Dec
79.	Lesser Black-backed Gull	3	542	534	273	102	0	314	909	98	534	38	1	3348	2059	1289	392 (10 Oct)	57	47	7 Jan	13 Dec
80.	Long-tailed Skua	0	0	0	0	0	0	0	8	0	0	0	0	8	7	1	6 (26 Aug)	2	2	26 Aug	28 Aug
81.	skua sp.	0	0	0	0	0	0	0	9	0	2	1	0	12	6	6	7 (26 Aug)	7	6	24 Aug	19 Nov
82.	Arctic Skua	0	0	0	1	4	0	0	4	1	5	1	0	16	10	6	4 (26 Aug)	12	10	16 Apr	19 Nov
83.	Pomarine Skua	0	0	0	0	0	0	0	0	0	1	0	2	3	2	1	2 (19 Dec)	2	2	29 Oct	19 Dec
84.	Great Skua	2	0	0	0	0	0	0	0	2	3	2	1	10	10	0	2 (10 Oct)	11	9	7 Jan	19 Dec
85.	Razorbill	7	0	0	0	0	0	0	0	0	2	1	74	84	84	0	73 (19 Dec)	7	6	14 Jan	19 Dec
86.	Razorbill/Guillemot	995	8	2	0	0	0	0	0	1	252	528	1355	3141	3031	110	692 (6 Dec)	38	31	11 Jan	19 Dec
87.	Guillemot	1071	5	1	0	0	0	0	0	2	92	96	66	1333	1319	14	836 (15 Jan)	32	26	7 Jan	19 Dec
88.	Red-throated Diver	702	67	35	12	10	0	0	0	0	33	1387	1687	3933	3755	178	726 (19 Dec)	55	45	7 Jan	19 Dec
89.	Black-throated Diver	2	1	0	1	0	0	0	0	0	0	0	2	6	3	3	2 (14 Dec)	6	5	27 Jan	14 Dec
90.	diver sp.	0	0	0	0	3	0	0	0	2	4	1	0	10	4	6	2 (3 May)	10	8	3 May	15 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Leach's Petrel	0	0	0	0	0	0	0	0	1	0	1	0	2	2	0	1 (12 Sep)	2	2	12 Sep	16 Nov
92.	Fulmar	0	0	0	2	0	0	0	1	0	0	0	0	3	0	3	1 (19 Apr)	4	3	19 Apr	31 Aug
93.	Sooty Shearwater	0	0	0	0	0	0	0	5	2	3	0	0	10	9	1	3 (26 Aug)	6	5	23 Aug	29 Oct
94.	Manx Shearwater	0	0	0	0	0	0	0	0	2	0	0	0	2	2	0	2 (25 Sep)	1	1	25 Sep	25 Sep
95.	Gannet	72	10	2	5	12	0	20	9	10	38	200	159	537	442	95	104 (22 Nov)	55	45	7 Jan	19 Dec
96.	Cormorant	351	150	357	901	489	0	507	97	203	695	545	295	4590	2238	2352	297 (20 Jul)	87	71	7 Jan	19 Dec
97.	Spoonbill	0	0	0	47	6	0	0	0	0	13	0	0	66	13	53	20 (17 Apr)	12	10	5 Apr	11 Oct
98.	Little Egret	0	0	0	0	0	0	1	0	0	0	0	0	1	0	1	1 (7 Jul)	1	1	7 Jul	7 Jul
99.	Grey Heron	0	0	0	24	1	0	9	0	1	1	1	1	38	13	25	14 (23 Apr)	18	15	5 Apr	6 Dec
100.	Sparrowhawk	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (22 Oct)	1	1	22 Oct	22 Oct
101.	Marsh Harrier	0	0	0	10	2	0	0	1	0	0	0	0	13	0	13	7 (23 Apr)	6	5	5 Apr	29 Aug
102.	Hen Harrier	0	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (4 Nov)	1	1	4 Nov	4 Nov
103.	Common Buzzard	0	0	0	1	0	0	0	0	0	0	2	0	3	2	1	1 (22 Apr)	4	3	22 Apr	15 Nov
104.	Kingfisher	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (5 Sep)	1	1	5 Sep	5 Sep
105.	Kestrel	0	0	0	2	1	0	1	0	0	1	3	0	8	6	2	2 (15 Nov)	9	7	5 Apr	22 Nov
106.	Merlin	0	1	0	2	1	0	0	0	4	0	0	0	8	4	4	2 (5 Sep)	9	7	29 Feb	12 Sep
107.	Peregrine	0	0	1	0	0	0	1	0	0	0	0	0	2	1	1	1 (28 Mar)	2	2	28 Mar	28 Jul
108.	Jackdaw	0	0	2	8	0	0	0	0	0	0	0	0	10	0	10	8 (16 Apr)	2	2	9 Mar	16 Apr
109.	Rook	0	0	0	1	0	0	0	0	0	0	0	0	1	1	0	1 (5 Apr)	1	1	5 Apr	5 Apr
110.	Carrion Crow	0	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (21 Jul)	1	1	21 Jul	21 Jul
111.	Wood Lark	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (12 Oct)	1	1	12 Oct	12 Oct
112.	Skylark	0	2	0	1	0	0	0	0	0	60	70	0	133	131	2	52 (22 Oct)	13	11	15 Feb	28 Nov
113.	Shore Lark	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	2 (22 Oct)	1	1	22 Oct	22 Oct
114.	Sand Martin	0	0	0	26	5	0	0	0	0	0	0	0	31	0	31	24 (23 Apr)	5	4	22 Apr	6 May
115.	Swallow	0	0	1	86	75	0	0	0	3	0	0	0	165	39	126	24 (20 Apr)	21	17	9 Mar	4 Sep
116.	House Martin	0	0	0	2	2	0	0	0	0	0	0	0	4	0	4	2 (19 Apr)	2	2	19 Apr	6 May
117.	Starling	0	1	0	0	0	0	45	0	0	7410	37040	210	44706	44705	1	18600 (4 Nov)	17	14	15 Feb	13 Dec
118.	Song Thrush	0	0	0	1	0	0	0	0	0	1	2	0	4	4	0	2 (15 Nov)	4	3	5 Apr	15 Nov
119.	Redwing	0	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (28 Nov)	1	1	28 Nov	28 Nov
120.	Fieldfare	0	0	0	0	0	0	0	0	0	0	141	0	141	141	0	140 (26 Nov)	2	2	20 Nov	26 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Wheatear	0	0	0	6	1	0	0	0	0	0	0	0	7	0	7	3 (23 Apr)	5	4	17 Apr	7 May
122.	Blue-headed Wagtail	0	0	0	47	22	0	0	7	0	0	0	0	76	10	66	33 (20 Apr)	13	11	19 Apr	29 Aug
123.	Yellow Wagtail (flavissima)	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (17 Apr)	1	1	17 Apr	17 Apr
124.	Grey-headed Wagtail	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (14 May)	1	1	14 May	14 May
125.	Yellow wagtail sp.	0	0	0	12	0	0	0	3	0	0	0	0	15	3	12	7 (16 Apr)	5	4	5 Apr	31 Aug
126.	Grey Wagtail	0	0	0	2	0	0	1	0	0	14	1	0	18	17	1	9 (11 Oct)	6	5	17 Apr	15 Nov
127.	White Wagtail	0	0	1	11	5	0	1	1	0	0	0	0	19	4	15	4 (19 Apr)	15	12	31 Mar	29 Aug
128.	alba wagtail sp.	0	0	4	18	0	0	0	3	7	4	2	0	38	14	24	9 (5 Apr)	16	13	9 Mar	28 Nov
129.	Meadow Pipit	0	0	6	265	2	0	0	2	1	257	18	0	551	278	273	141 (11 Oct)	26	21	8 Mar	15 Nov
130.	Tree Pipit	0	0	0	1	0	0	0	0	0	0	0	0	1	1	0	1 (5 Apr)	1	1	5 Apr	5 Apr
131.	Rock Pipit	0	0	0	0	0	0	0	0	0	3	0	0	3	3	0	1 (11 Oct)	4	3	11 Oct	29 Oct
132.	Rock Pipit/Water Pipit	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (11 Oct)	2	2	11 Oct	12 Oct
133.	Chaffinch	0	0	0	0	0	0	0	0	0	4560	1504	1	6065	6065	0	2600 (22 Oct)	9	7	11 Oct	6 Dec
134.	Brambling	0	0	0	0	0	0	0	0	0	10	4	0	14	14	0	7 (22 Oct)	5	4	11 Oct	15 Nov
135.	Greenfinch	0	0	0	0	1	0	0	0	0	13	2	0	16	15	1	12 (12 Oct)	5	4	14 May	4 Nov
136.	Linnet	0	0	3	32	7	0	0	0	0	4	7	0	53	13	40	9 (20 Apr)	15	12	28 Mar	15 Nov
137.	Redpoll	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (22 Oct)	1	1	22 Oct	22 Oct
138.	Crossbill	0	0	0	0	0	0	0	0	0	8	0	0	8	8	0	8 (22 Oct)	1	1	22 Oct	22 Oct
139.	Goldfinch	0	0	0	15	1	0	0	0	0	12	21	1	50	33	17	21 (15 Nov)	11	9	16 Apr	6 Dec
140.	Siskin	0	0	0	0	0	0	0	0	0	254	11	0	265	265	0	214 (22 Oct)	6	5	11 Oct	28 Nov
141.	Lapland Bunting	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (22 Oct)	1	1	22 Oct	22 Oct
142.	Snow Bunting	0	0	0	0	0	0	0	0	0	1	3	0	4	2	2	2 (28 Nov)	4	3	29 Oct	28 Nov
143.	Reed Bunting	0	3	0	2	0	0	0	0	0	9	3	0	17	12	5	4 (11 Oct)	7	6	3 Feb	15 Nov
	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	13	2	3	0	0	0	2	1	8	2	11	17	59	35	24	9 (19 Dec)	29	24	11 Jan	19 Dec
2.	Grey seal	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (25 Sep)	1	1	25 Sep	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	6486	1535	2133	22324	7481	0	5267	3954	1953	20194	49267	5112	125706	89191	36515		100	82
	Observation hours	11:45	10:35	9:26	31:21	20:25	0:00	18:15	23:38	16:25	14:15	32:47	7:05	195:57

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Totals Katwijk - Savoy (zeetrek) 2020