Also present

Totals Berkheide (Katwijk) 2020

	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	0	0	13	111	49	0	0	0	0	0	1	174	24	150	60 (18 Apr)	20	17	4 Mar	6 Nov
2.	Canada Goose	0	0	42	43	204	37	32	0	0	0	0	358	85	273	92 (31 May)	35	29	4 Mar	30 Jul
3.	Barnacle Goose	0	4	1074	8893	316	122	0	0	0	0	25	10434	221	10213	3066 ( 4 Apr)	66	55	5 Feb	7 Nov
4.	Bar-headed Goose	0	0	0	0	0	2	0	0	0	0	0	2	0	2	2 (13 Jun)	1	1	13 Jun	13 Jun
5.	Greylag Goose	0	72	291	244	377	33	30	0	0	0	22	1069	495	574	100 (21 May)	75	62	5 Feb	7 Nov
6.	goose sp.	150	0	60	124	0	0	0	0	0	0	0	334	0	334	150 ( 6 Jan)	6	5	6 Jan	22 Apr
7.	Pink-footed Goose	0	90	0	0	0	0	0	0	0	0	100	190	100	90	90 ( 6 Feb)	4	3	6 Feb	7 Nov
8.	Tundra Bean Goose	0	0	0	4	0	0	0	0	0	0	0	4	0	4	4 ( 4 Apr)	1	1	4 Apr	4 Apr
9.	Eurasian White-fronted Goose	2	15	177	0	1	0	0	0	0	0	183	378	39	339	183 ( 7 Nov)	6	5	6 Jan	7 Nov
10.	Mute Swan	4	2	5	22	151	29	2	0	0	0	0	215	91	124	32 (10 May)	36	30	6 Jan	13 Jul
11.	Whooper Swan	2	0	0	0	0	0	0	0	0	0	0	2	0	2	2 ( 6 Jan)	1	1	6 Jan	6 Jan
12.	Egyptian Goose	0	0	44	213	62	0	0	0	0	0	20	339	113	226	34 ( 6 May)	31	26	7 Mar	7 Nov
13.	Shelduck	0	0	39	106	155	62	22	0	0	0	0	384	108	276	52 (30 May)	61	51	4 Mar	31 Jul
14.	Ruddy Shelduck	0	0	0	0	0	0	2	0	0	0	0	2	2	0	2 (31 Jul)	1	1	31 Jul	31 Jul
15.	Garganey	0	0	0	5	0	2	0	0	0	0	0	7	2	5	3 (11 Apr)	4	3	11 Apr	26 Jun
16.	Shoveler	0	0	170	346	2	2	0	0	0	0	0	520	70	450	101 ( 5 Apr)	25	21	7 Mar	1 Jun
17.	Gadwall	0	0	14	11	23	54	3	0	0	0	0	105	48	57	17 (13 Jun)	28	23	22 Mar	31 Jul
18.	Wigeon	0	0	206	6	0	0	0	0	0	11	7	230	49	181	118 ( 7 Mar)	13	11	5 Mar	7 Nov
19.	Mallard	0	0	7	17	27	30	0	0	0	0	0	81	33	48	26 (26 Jun)	28	23	5 Mar	26 Jun
20.	Pintail	0	0	28	1	0	0	0	0	0	16	0	45	18	27	20 (21 Mar)	6	5	16 Mar	3 Oct
21.	Teal	0	0	32	19	0	0	0	0	0	0	0	51	18	33	13 ( 5 Apr)	13	11	7 Mar	26 Apr
22.	duck sp.	0	0	1	14	4	0	0	0	0	0	0	19	10	9	7 (17 Apr)	6	5	25 Mar	29 May
23.	Pochard	0	0	0	0	7	0	0	0	0	0	0	7	4	3	3 ( 9 May)	5	4	5 May	10 May
24.	Tufted Duck	0	0	7	11	23	3	1	0	0	0	0	45	19	26	7 (25 Mar)	18	15	25 Mar	31 Jul
25.	Eider	0	0	82	28	24	1	2	0	0	0	5	142	85	57	20 (14 Mar)	36	30	4 Mar	7 Nov
26.	Velvet Scoter	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 ( 3 Mar)	1	1	3 Mar	3 Mar
27.	Common Scoter	30	0	141	276	186	19	14	0	0	1	7	674	210	464	82 (10 May)	49	41	6 Jan	7 Nov
28.	Goldeneye	5	0	0	0	0	0	0	0	0	0	1	6	1	5	5 ( 6 Jan)	2	2	6 Jan	7 Nov
29.	Goosander	2	0	4	8	0	0	0	0	0	0	0	14	7	7	8 (17 Apr)	6	5	6 Jan	17 Apr
30.	Red-breasted Merganser	0	0	36	48	9	2	0	0	0	0	2	97	25	72	11 (19 Apr)	28	23	4 Mar	7 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Swift	0	0	0	95	9712	5443	1489	0	0	0	0	16739	1698	15041	3298 (28 May)	41	34	16 Apr	31 Jul
32.	Cuckoo	0	0	0	4	3	2	0	0	0	0	0	9	3	6	3 (23 Apr)	7	6	17 Apr	24 Jun
33.	Stock Dove	0	4	88	102	41	8	0	0	0	2	1	246	48	198	35 (14 Mar)	59	49	7 Feb	7 Nov
34.	Woodpigeon	0	67	1776	833	281	22	5	0	0	5	0	2989	308	2681	389 (25 Mar)	61	51	7 Feb	24 Oct
35.	Turtle Dove	0	0	0	0	3	0	0	0	0	0	0	3	0	3	1 ( 8 May)	4	3	8 May	14 May
36.	Collared Dove	0	1	47	52	29	15	0	0	0	0	0	144	38	106	14 (25 Mar)	48	40	7 Feb	25 Jun
37.	Great Crested Grebe	0	0	17	13	6	2	1	0	0	0	11	50	23	27	11 ( 7 Nov)	23	19	3 Mar	7 Nov
38.	Oystercatcher	0	1	9	145	215	31	28	0	0	0	0	429	158	271	38 ( 7 May)	57	47	7 Feb	31 Jul
39.	Avocet	0	0	48	31	7	0	0	0	0	0	0	86	7	79	25 (16 Apr)	7	6	14 Mar	31 May
40.	Lapwing	0	11	18	40	5	19	1	0	0	0	0	94	44	50	15 (17 Jun)	29	24	7 Feb	31 Jul
41.	Golden Plover	0	0	3	4	23	1	0	0	0	0	0	31	0	31	15 (29 May)	6	5	27 Mar	25 Jun
42.	Grey Plover	0	0	0	8	5	0	0	0	0	2	0	15	0	15	4 (18 Apr)	8	7	10 Apr	3 Oct
43.	Ringed Plover	0	0	1	8	36	14	0	0	0	0	0	59	0	59	12 ( 9 May)	11	9	27 Mar	2 Jun
44.	Little Ringed Plover	0	0	7	8	1	6	0	0	0	0	0	22	8	14	3 (16 Jun)	19	16	5 Mar	26 Jun
45.	Dotterel	0	0	0	0	2	0	0	0	0	0	0	2	0	2	1 ( 5 May)	2	2	5 May	6 May
46.	Whimbrel	0	0	0	1455	17	2	12	0	0	0	0	1486	18	1468	435 (19 Apr)	39	32	5 Apr	31 Jul
47.	Curlew	0	2	22	25	3	113	3	0	0	0	0	168	123	45	59 (26 Jun)	30	25	5 Feb	30 Jul
48.	Bar-tailed Godwit	0	0	0	35	0	0	1	0	0	0	0	36	3	33	10 (19 Apr)	12	10	4 Apr	31 Jul
49.	Black-tailed Godwit	0	0	12	8	0	0	0	0	0	0	0	20	0	20	12 (24 Mar)	2	2	24 Mar	16 Apr
50.	Turnstone	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
51.	Knot	0	0	0	0	78	0	0	0	0	0	0	78	0	78	43 ( 5 May)	2	2	5 May	31 May
52.	Ruff	0	0	32	22	2	2	0	0	0	0	0	58	0	58	27 (22 Mar)	11	9	22 Mar	26 Jun
53.	wader sp.	0	0	40	61	31	0	5	0	0	0	0	137	6	131	20 (19 Apr)	20	17	21 Mar	31 Jul
54.	Sanderling	0	0	0	66	1	0	0	0	0	0	0	67	0	67	25 (19 Apr)	7	6	19 Apr	2 May
55.	Dunlin	0	0	23	3	4	0	0	0	0	0	3	33	4	29	17 (22 Mar)	8	7	22 Mar	7 Nov
56.	Calidris sp.	0	0	0	1	12	0	0	0	0	0	0	13	0	13	12 (31 May)	2	2	18 Apr	31 May
57.	Woodcock	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 ( 7 Nov)	1	1	7 Nov	7 Nov
58.	Snipe	0	0	15	28	0	0	2	0	0	15	0	60	19	41	11 ( 4 Oct)	16	13	24 Mar	4 Oct
59.	Green Sandpiper	0	0	3	189	2	3	13	0	0	0	0	210	15	195	49 (11 Apr)	29	24	24 Mar	31 Jul
60.	Redshank	0	0	54	134	8	2	1	0	0	0	0	199	1	198	45 (17 Apr)	24	20	14 Mar	31 Jul
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Wood Sandpiper	0	0	0	6	4	0	3	0	0	0	0	13	3	10	4 (23 Apr)	7	6	5 Apr	31 Jul
62.	Spotted Redshank	0	0	0	3	0	0	0	0	0	0	0	3	0	3	2 (19 Apr)	2	2	19 Apr	20 Apr
63.	Greenshank	0	0	0	50	16	0	0	0	0	0	0	66	2	64	13 (23 Apr)	19	16	11 Apr	20 May
64.	Black-headed Gull	0	22	518	711	349	526	646	0	0	70	815	3657	2116	1541	815 ( 7 Nov)	70	58	5 Feb	7 Nov
65.	Little Gull	0	0	0	1908	3	0	0	0	0	0	0	1911	12	1899	949 (26 Apr)	19	16	8 Apr	10 May
66.	Mediterranean Gull	0	0	6	126	4	10	4	0	0	0	0	150	14	136	92 (23 Apr)	27	22	7 Mar	31 Jul
67.	Common Gull	0	54	497	582	84	6	79	0	0	30	11	1343	128	1215	250 (27 Apr)	55	46	5 Feb	7 Nov
68.	Great Black-backed Gull	0	4	13	24	5	0	0	0	0	57	4	107	62	45	56 (24 Oct)	33	27	5 Feb	7 Nov
69.	Iceland Gull	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 5 May)	1	1	5 May	5 May
70.	Herring Gull	0	365	527	781	226	0	12	0	0	210	0	2121	222	1899	320 ( 5 Feb)	55	46	5 Feb	24 Oct
71.	Lesser Black-backed Gull	0	6	2120	4961	1174	2	70	0	0	120	12	8465	269	8196	581 (19 Apr)	66	55	5 Feb	7 Nov
72.	Gull-billed Tern	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (19 Apr)	1	1	19 Apr	19 Apr
73.	Sandwich Tern	0	0	5	466	318	81	124	0	0	0	0	994	224	770	120 (20 Apr)	43	36	24 Mar	31 Jul
74.	Little Tern	0	0	0	35	43	0	0	0	0	0	0	78	2	76	30 ( 5 May)	11	9	19 Apr	9 May
75.	Common Tern	0	0	0	5985	1411	42	303	0	0	0	0	7741	597	7144	1670 (19 Apr)	40	33	5 Apr	30 Jul
76.	Arctic Tern	0	0	0	16	16	0	0	0	0	0	0	32	0	32	16 ( 2 May)	4	3	17 Apr	2 May
77.	Common/Arctic Tern	0	0	0	54	349	0	0	0	0	0	0	403	0	403	228 (15 May)	8	7	18 Apr	15 May
78.	Black Tern	0	0	0	237	0	0	0	0	0	0	0	237	0	237	211 (26 Apr)	6	5	12 Apr	26 Apr
79.	Arctic Skua	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 2 May)	1	1	2 May	2 May
80.	Razorbill/Guillemot	20	0	1	0	0	0	0	0	0	0	0	21	21	0	20 ( 6 Jan)	2	2	6 Jan	4 Mar
81.	Red-throated Diver	5	8	57	13	6	0	0	0	0	0	21	110	36	74	27 ( 7 Mar)	35	29	6 Jan	7 Nov
82.	diver sp.	0	0	0	0	2	0	0	0	0	0	0	2	0	2	2 ( 2 May)	1	1	2 May	2 May
83.	Fulmar	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
84.	White Stork	0	0	1	3	1	0	0	0	0	0	0	5	0	5	2 ( 5 Apr)	5	4	25 Mar	15 May
85.	Gannet	4	0	1	12	16	2	14	0	0	0	2	51	23	28	9 ( 4 May)	25	21	6 Jan	7 Nov
86.	Cormorant	12	38	1767	2897	1207	389	272	0	0	188	76	6846	1216	5630	388 ( 6 May)	76	63	6 Jan	7 Nov
87.	Spoonbill	0	0	51	242	71	35	0	0	0	0	0	399	7	392	81 ( 5 Apr)	49	41	14 Mar	26 Jun
88.	Bittern	0	0	0	0	1	1	0	0	0	0	0	2	0	2	1 (10 May)	2	2	10 May	1 Jun
89.	Grey Heron	1	2	140	187	55	34	18	0	0	20	1	458	86	372	65 (24 Mar)	78	65	6 Jan	7 Nov
90.	Purple Heron	0	0	0	3	4	1	5	0	0	0	0	13	6	7	5 (30 Jul)	10	8	6 Apr	30 Jul
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Great White Egret	0	0	12	17	20	0	2	0	0	0	0	51	16	35	9 (21 May)	27	22	7 Mar	31 Jul
92.	heron sp.	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (11 Apr)	1	1	11 Apr	11 Apr
93.	Little Egret	0	0	0	1	1	0	0	0	0	0	0	2	0	2	1 (23 Apr)	2	2	23 Apr	10 May
94.	Osprey	0	0	0	4	4	0	0	0	0	0	0	8	1	7	2 (11 Apr)	8	7	11 Apr	10 May
95.	Honey Buzzard	0	0	0	0	1	1	0	0	0	0	0	2	0	2	1 ( 6 May)	2	2	6 May	12 Jun
96.	Booted Eagle	0	0	0	0	1	1	0	0	0	0	0	2	2	0	1 ( 5 May)	2	2	5 May	13 Jun
97.	Sparrowhawk	0	0	8	22	3	0	0	0	0	3	4	40	10	30	4 ( 5 Apr)	30	25	7 Mar	7 Nov
98.	Goshawk	0	0	2	1	0	0	0	0	0	0	0	3	1	2	1 (14 Mar)	4	3	14 Mar	23 Apr
99.	Marsh Harrier	0	0	24	74	33	0	1	0	0	0	1	133	6	127	16 (10 May)	41	34	23 Mar	6 Nov
100.	Hen Harrier	0	0	2	5	1	0	0	0	0	0	3	11	4	7	3 ( 7 Nov)	10	8	14 Mar	7 Nov
101.	Pallid Harrier	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (23 Apr)	1	1	23 Apr	23 Apr
102.	Red Kite	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
103.	Black Kite	0	0	0	3	0	0	0	0	0	0	0	3	2	1	1 ( 5 Apr)	4	3	5 Apr	17 Apr
104.	White-tailed Eagle	0	0	3	0	0	0	0	0	0	0	0	3	1	2	2 (22 Mar)	2	2	21 Mar	22 Mar
105.	Common Buzzard	0	2	1	11	2	0	0	0	0	0	6	22	7	15	5 (18 Apr)	12	10	7 Feb	7 Nov
106.	Short-eared Owl	0	0	1	1	0	0	0	0	0	0	1	3	1	2	1 (24 Mar)	4	3	24 Mar	7 Nov
107.	Lesser Spotted Woodpecker	0	0	1	0	0	0	0	0	0	0	0	1	1	0	1 (23 Mar)	1	1	23 Mar	23 Mar
108.	Great Spotted Woodpecker	1	0	12	16	0	1	20	0	0	0	3	53	27	26	19 (31 Jul)	24	20	6 Jan	7 Nov
109.	Green Woodpecker	0	0	0	0	0	0	1	0	0	0	0	1	0	1	1 (19 Jul)	1	1	19 Jul	19 Jul
110.	Kestrel	0	0	3	32	5	0	7	0	0	0	0	47	7	40	7 (11 Apr)	22	18	25 Mar	31 Jul
111.	Red-footed Falcon	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (10 May)	1	1	10 May	10 May
112.	Merlin	0	0	2	13	4	0	0	0	0	0	0	19	0	19	4 (23 Apr)	16	13	25 Mar	9 May
113.	Hobby	0	0	0	3	5	1	0	0	0	0	0	9	0	9	2 (19 Apr)	10	8	18 Apr	2 Jun
114.	Peregrine	0	0	6	1	1	0	0	0	0	0	0	8	3	5	3 (14 Mar)	7	6	3 Mar	10 May
115.	Rose-ringed Parakeet	0	0	1	3	0	0	0	0	0	0	0	4	1	3	3 ( 8 Apr)	2	2	24 Mar	8 Apr
116.	Golden Oriole	0	0	0	1	8	2	0	0	0	0	0	11	7	4	2 ( 9 May)	10	8	27 Apr	1 Jun
117.	Jay	0	0	2	7	6	0	0	0	0	0	0	15	5	10	4 ( 8 Apr)	11	9	26 Mar	21 May
118.	Magpie	0	0	47	59	4	1	0	0	0	0	0	111	24	87	20 ( 8 Apr)	29	24	3 Mar	12 Jun
119.	Jackdaw	0	0	201	250	136	12	0	0	0	2	0	601	202	399	65 (14 Mar)	52	43	3 Mar	3 Oct
120.	Rook	0	0	1	3	0	0	0	0	0	0	0	4	1	3	1 (25 Mar)	5	4	25 Mar	19 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Carrion Crow	0	0	15	126	4	2	0	0	0	5	0	152	18	134	25 (23 Apr)	25	21	14 Mar	3 Oct
122.	Raven	0	1	0	1	0	0	0	0	0	0	0	2	1	1	1 ( 6 Feb)	2	2	6 Feb	12 Apr
123.	Coal Tit	0	0	0	2	0	0	0	0	0	0	2	4	0	4	2 ( 6 Nov)	4	3	19 Apr	6 Nov
124.	Blue Tit	0	0	12	2	1	12	0	0	0	8	17	52	28	24	17 ( 7 Nov)	19	16	4 Mar	7 Nov
125.	Great Tit	0	0	12	9	2	8	0	0	0	2	4	37	12	25	8 (14 Mar)	18	15	7 Mar	7 Nov
126.	Wood Lark	0	0	4	2	0	0	0	0	0	1	5	12	6	6	5 ( 7 Nov)	8	7	3 Mar	7 Nov
127.	Skylark	0	12	28	7	2	0	0	0	0	4	28	81	34	47	26 ( 7 Nov)	19	16	7 Feb	7 Nov
128.	Shore Lark	0	0	0	1	0	0	0	0	0	0	1	2	1	1	1 (11 Apr)	2	2	11 Apr	7 Nov
129.	Sand Martin	0	0	1	682	203	18	31	0	0	0	0	935	107	828	277 (23 Apr)	48	40	21 Mar	31 Jul
130.	Swallow	0	0	1	1310	1362	78	54	0	0	13	0	2818	234	2584	345 ( 7 May)	58	48	26 Mar	24 Oct
131.	House Martin	0	0	0	110	195	30	35	0	0	2	0	372	77	295	51 ( 6 May)	43	36	5 Apr	4 Oct
132.	Red-rumped Swallow	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (21 Apr)	1	1	21 Apr	21 Apr
133.	Long-tailed Tit	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (14 Mar)	1	1	14 Mar	14 Mar
134.	Willow Warbler	0	0	1	6	1	0	0	0	0	0	0	8	1	7	4 (11 Apr)	6	5	25 Mar	6 May
135.	Chiffchaff	0	0	13	8	3	0	0	0	0	0	0	24	1	23	4 (14 Mar)	14	12	14 Mar	29 May
136.	Chiffchaff/Willow Warbler	0	0	3	14	0	0	0	0	0	0	0	17	0	17	4 (16 Apr)	12	10	25 Mar	27 Apr
137.	Phylloscopus sp.	0	0	0	0	0	0	0	0	0	0	1	1	0	1	1 ( 6 Nov)	1	1	6 Nov	6 Nov
138.	Blackcap	0	0	0	4	3	0	0	0	0	0	0	7	1	6	1 ( 5 Apr)	8	7	5 Apr	15 May
139.	Lesser Whitethroat	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
140.	Whitethroat	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (23 Apr)	1	1	23 Apr	23 Apr
141.	Firecrest	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 ( 7 Nov)	1	1	7 Nov	7 Nov
142.	Goldcrest	0	0	0	3	0	0	0	0	0	0	0	3	1	2	1 ( 4 Apr)	4	3	4 Apr	6 Apr
143.	Nuthatch	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (26 Mar)	1	1	26 Mar	26 Mar
144.	Crested Myna	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (23 Apr)	1	1	23 Apr	23 Apr
145.	Starling	0	21	1725	284	95	21995	2862	0	0	48660	15430	91072	89090	1982	36400 (24 Oct)	72	60	5 Feb	7 Nov
146.	Song Thrush	0	0	37	530	0	0	0	0	0	45	3	615	52	563	160 (11 Apr)	37	31	3 Mar	7 Nov
147.	Mistle Thrush	0	4	24	6	1	0	0	0	0	0	1	36	2	34	6 (24 Mar)	14	12	24 Feb	7 Nov
148.	Redwing	0	0	43	15	0	0	0	0	0	73	175	306	255	51	115 ( 7 Nov)	17	14	14 Mar	7 Nov
149.	Blackbird	0	0	0	2	1	0	0	0	0	2	3	8	6	2	3 ( 7 Nov)	6	5	6 Apr	7 Nov
150.	Fieldfare	0	0	21	2	0	0	0	0	0	1	99	123	109	14	79 ( 7 Nov)	12	10	14 Mar	7 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Ring Ouzel	0	0	2	258	1	0	0	0	0	1	0	262	41	221	47 (18 Apr)	25	21	25 Mar	4 Oct
152.	Spotted Flycatcher	0	0	0	2	30	6	1	0	0	0	0	39	4	35	8 ( 6 May)	18	15	19 Apr	13 Jul
153.	Black Redstart	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (24 Mar)	1	1	24 Mar	24 Mar
154.	Wheatear	0	0	2	32	6	0	0	0	0	0	0	40	2	38	12 (23 Apr)	12	10	22 Mar	9 May
155.	Tree Sparrow	0	0	3	2	0	0	0	0	0	0	0	5	0	5	2 (14 Mar)	5	4	14 Mar	21 Apr
156.	House Sparrow	0	0	3	4	8	9	33	0	0	0	0	57	44	13	17 (30 Jul)	16	13	24 Mar	30 Jul
157.	Dunnock	0	0	16	8	3	0	0	0	0	0	0	27	1	26	6 (24 Mar)	18	15	7 Mar	7 May
158.	Blue-headed Wagtail	0	0	0	397	20	0	2	0	0	0	0	419	5	414	112 (20 Apr)	18	15	5 Apr	13 Jul
159.	Yellow Wagtail (flavissima)	0	0	0	24	11	0	0	0	0	0	0	35	2	33	8 (23 Apr)	17	14	6 Apr	29 May
160.	Grey-headed Wagtail	0	0	0	0	18	2	0	0	0	0	0	20	0	20	10 ( 9 May)	10	8	4 May	1 Jun
161.	Yellow wagtail sp.	0	0	0	1058	232	11	3	0	0	0	0	1304	15	1289	344 (23 Apr)	35	29	5 Apr	31 Jul
162.	Grey Wagtail	0	0	12	3	5	0	2	0	0	12	0	34	12	22	6 ( 3 Oct)	19	16	21 Mar	24 Oct
163.	White Wagtail	0	1	157	52	3	2	7	0	0	0	0	222	19	203	59 (22 Mar)	33	27	5 Feb	19 Jul
164.	alba wagtail sp.	0	1	459	136	2	0	3	0	0	13	0	614	88	526	103 (14 Mar)	41	34	27 Feb	4 Oct
165.	Pied Wagtail	0	1	0	2	2	0	0	0	0	0	0	5	1	4	2 ( 6 May)	5	4	27 Feb	6 May
166.	Richard's Pipit	0	0	0	1	0	0	0	0	0	1	0	2	1	1	1 (18 Apr)	2	2	18 Apr	3 Oct
167.	Tawny Pipit	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 ( 3 Oct)	1	1	3 Oct	3 Oct
168.	Meadow Pipit	1	1	983	10815	26	8	26	0	0	2839	48	14747	2940	11807	2412 (23 Apr)	70	58	6 Jan	7 Nov
169.	Tree Pipit	0	0	0	359	83	1	1	0	0	2	0	446	8	438	110 (23 Apr)	36	30	4 Apr	3 Oct
170.	Rock Pipit	0	0	0	1	0	0	0	0	0	2	0	3	2	1	2 (24 Oct)	2	2	10 Apr	24 Oct
171.	Rock Pipit/Water Pipit	0	0	4	2	0	0	0	0	0	2	0	8	2	6	3 (25 Mar)	6	5	14 Mar	4 Oct
172.	Chaffinch	0	282	498	59	21	0	0	0	0	5795	5420	12075	11229	846	5420 ( 7 Nov)	54	45	5 Feb	7 Nov
173.	Brambling	0	0	56	51	1	0	0	0	0	59	122	289	192	97	122 ( 7 Nov)	34	28	3 Mar	7 Nov
174.	Hawfinch	0	0	7	12	67	7	0	0	0	0	0	93	18	75	20 (21 May)	33	27	7 Mar	25 Jun
175.	Greenfinch	0	1	89	54	16	2	2	0	0	16	34	214	63	151	34 ( 7 Nov)	47	39	5 Feb	7 Nov
176.	Linnet	0	1	433	1723	76	3	1	0	0	0	2	2239	46	2193	310 ( 5 Apr)	55	46	7 Feb	7 Nov
177.	redpoll sp.	0	0	1	7	0	0	0	0	0	0	2	10	3	7	4 (18 Apr)	6	5	24 Mar	7 Nov
178.	Crossbill	0	0	0	6	122	101	6	0	0	0	13	248	190	58	77 (29 May)	22	18	9 Apr	7 Nov
179.	Goldfinch	0	1	66	118	12	3	4	0	0	6	56	266	81	185	56 ( 7 Nov)	47	39	7 Feb	7 Nov
180.	Serin	0	0	0	2	0	0	0	0	0	0	0	2	0	2	1 ( 5 Apr)	2	2	5 Apr	18 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
181.	Siskin	6	2	29	6	3	11	2	0	0	90	75	224	195	29	75 ( 7 Nov)	31	26	6 Jan	7 Nov
182.	Lapland Bunting	0	0	0	0	0	0	0	0	0	8	2	10	10	0	5 ( 4 Oct)	5	4	3 Oct	7 Nov
183.	Yellowhammer	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 ( 7 Apr)	1	1	7 Apr	7 Apr
184.	Ortolan Bunting	0	0	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 1 Jun)	1	1	1 Jun	1 Jun
185.	Reed Bunting	0	2	57	30	1	0	0	0	0	21	39	150	63	87	39 ( 7 Nov)	33	27	24 Feb	7 Nov
186.	passerine sp.	0	0	0	0	2	0	0	0	0	0	0	2	0	2	2 (21 May)	1	1	21 May	21 May
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Harbour Porpoise	0	0	0	2	0	0	0	0	0	0	0	2	1	1	2 (26 Apr)	1	1	26 Apr	26 Apr
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Brimstone	0	0	0	4	0	0	0	0	0	0	0	4	2	2	1 ( 5 Apr)	5	4	5 Apr	23 Apr
2.	Large White	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (23 Apr)	1	1	23 Apr	23 Apr
3.	white sp. (butterfly)	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
4.	Red Admiral	0	0	0	2	4	0	0	0	0	0	0	6	0	6	4 ( 8 May)	2	2	23 Apr	8 May
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Bumblebee sp.	0	0	6	36	4	0	0	0	0	0	0	46	1	45	8 (12 Apr)	19	16	17 Mar	6 May
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	245	1101	15549	52158	20402	29541	6325	0	0	58436	22932	206689	115096	91593		100	83
	Observation hours	1:40	7:40	55:40	96:30	68:16	34:17	15:45	0:00	0:00	7:45	4:10	291:43

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Totals Berkheide (Katwijk) 2020