Also present

Totals Berkheide (Katwijk) 2021

	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	31	47	49	399	0	0	0	0	1	0	527	26	501	380 (25 May)	14	11	8 Feb	26 Oct
2.	Canada Goose	0	27	58	8	0	99	0	0	2	0	0	194	108	86	40 (16 Jun)	21	16	6 Feb	4 Sep
3.	Barnacle Goose	0	2330	480	1732	1214	11	3	0	0	5	0	5775	120	5655	2010 (18 Feb)	49	38	3 Feb	24 Oct
4.	Greylag Goose	11	133	121	101	86	13	0	0	0	0	0	465	159	306	46 (24 Apr)	61	47	15 Jan	28 Jun
5.	goose sp.	0	10501	0	140	30	0	0	0	0	120	0	10791	2400	8391	3500 ( 4 Feb)	13	10	3 Feb	24 Oct
6.	Pink-footed Goose	0	3391	0	0	0	0	0	0	0	1	50	3442	162	3280	3000 ( 4 Feb)	10	8	3 Feb	3 Nov
7.	Tundra Bean Goose	0	93	0	0	0	0	0	0	0	0	0	93	1	92	92 (23 Feb)	3	2	20 Feb	23 Feb
8.	Eurasian White-fronted Goose	20	1490	31	0	0	0	0	0	0	0	0	1541	83	1458	1047 (20 Feb)	13	10	31 Jan	2 Mar
9.	Mute Swan	2	8	4	4	135	7	0	0	0	2	0	162	115	47	46 (13 May)	25	19	15 Jan	24 Oct
10.	Bewick's Swan	0	1	0	0	0	0	0	0	0	0	0	1	1	0	1 (13 Feb)	1	1	13 Feb	13 Feb
11.	Whooper Swan	0	32	0	0	0	0	0	0	0	0	0	32	0	32	32 (20 Feb)	1	1	20 Feb	20 Feb
12.	Egyptian Goose	8	57	24	81	16	1	0	0	0	29	3	219	168	51	46 ( 3 Feb)	27	21	31 Jan	2 Nov
13.	Shelduck	2	34	20	40	86	27	42	0	0	2	0	253	58	195	34 (21 Jul)	49	38	15 Jan	24 Oct
14.	Garganey	0	0	6	0	0	0	0	0	0	0	0	6	0	6	6 (19 Mar)	1	1	19 Mar	19 Mar
15.	Shoveler	0	7	262	51	0	0	0	0	0	0	0	320	2	318	158 ( 2 Mar)	18	14	8 Feb	28 Apr
16.	Gadwall	0	15	4	14	24	3	0	0	0	0	0	60	17	43	9 ( 8 May)	19	15	8 Feb	2 Jun
17.	Wigeon	0	383	101	0	0	0	0	0	4	2	0	490	232	258	153 ( 8 Feb)	14	11	8 Feb	10 Oct
18.	Mallard	0	1	1	3	9	0	3	0	0	0	0	17	7	10	4 (13 May)	12	9	20 Feb	19 Jul
19.	Pintail	0	6	159	0	0	0	0	0	0	0	0	165	3	162	94 ( 2 Mar)	12	9	8 Feb	31 Mar
20.	Teal	0	1	131	9	0	0	0	0	0	0	0	141	1	140	107 ( 2 Mar)	9	7	20 Feb	19 Apr
21.	duck sp.	0	4	0	0	0	0	0	0	0	0	0	4	4	0	4 (22 Feb)	1	1	22 Feb	22 Feb
22.	Red-crested Pochard	0	0	0	0	3	2	0	0	0	0	0	5	3	2	3 ( 9 May)	3	2	9 May	17 Jun
23.	Pochard	0	4	0	1	9	9	0	0	0	0	0	23	4	19	7 ( 2 Jun)	10	8	22 Feb	2 Jun
24.	Tufted Duck	0	4	0	2	12	4	0	0	2	0	0	24	5	19	10 (13 May)	10	8	8 Feb	23 Sep
25.	Scaup	0	0	0	0	0	0	8	0	15	7	0	30	22	8	15 (23 Sep)	4	3	19 Jul	10 Oct
26.	Eider	0	4	51	20	6	0	0	0	1	0	0	82	36	46	16 ( 6 Mar)	25	19	6 Feb	23 Sep
27.	Velvet Scoter	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (24 Feb)	1	1	24 Feb	24 Feb
28.	Common Scoter	97	179	101	1164	161	0	5	0	0	13	0	1720	632	1088	374 (19 Apr)	58	45	15 Jan	26 Oct
29.	Long-tailed Duck	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
30.	Goldeneye	0	1	1	0	0	0	0	0	0	0	0	2	1	1	1 (13 Feb)	3	2	13 Feb	30 Mar
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Smew	0	24	0	0	0	0	0	0	0	0	0	24	24	0	19 (13 Feb)	3	2	12 Feb	13 Feb
32.	Goosander	3	12	2	0	0	0	0	0	0	0	0	17	9	8	4 (13 Feb)	12	9	15 Jan	24 Mar
33.	Red-breasted Merganser	0	21	22	24	10	0	0	0	0	1	0	78	34	44	13 (13 Feb)	30	23	3 Feb	10 Oct
34.	Alpine Swift	0	0	0	0	1	0	0	0	0	0	0	1	1	0	1 ( 9 May)	1	1	9 May	9 May
35.	Swift	0	0	0	96	1867	1297	710	0	0	0	0	3970	940	3030	578 (29 May)	36	28	24 Apr	22 Jul
36.	Cuckoo	0	0	0	3	2	0	0	0	0	0	0	5	1	4	2 (27 Apr)	5	4	20 Apr	20 May
37.	Stock Dove	0	38	17	9	8	4	1	0	0	18	1	96	31	65	25 (20 Feb)	35	27	18 Feb	3 Nov
38.	Woodpigeon	0	155	772	195	192	148	0	0	4	675	119	2260	941	1319	668 (24 Oct)	56	43	6 Feb	3 Nov
39.	Turtle Dove	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (28 Apr)	1	1	28 Apr	28 Apr
40.	Collared Dove	0	5	14	23	14	12	1	0	0	0	0	69	25	44	6 (31 Mar)	32	25	18 Feb	19 Jul
41.	Great Crested Grebe	27	39	50	4	2	0	0	0	9	4	0	135	74	61	27 (16 Jan)	27	21	16 Jan	26 Oct
42.	Oystercatcher	0	33	19	103	250	22	2	0	0	2	2	433	148	285	58 ( 9 May)	45	35	18 Feb	3 Nov
43.	Avocet	0	0	1	11	0	2	0	0	0	0	0	14	0	14	6 (28 Apr)	5	4	30 Mar	1 Jun
44.	Lapwing	0	213	11	11	14	7	0	0	0	0	0	256	180	76	128 (12 Feb)	29	22	6 Feb	2 Jun
45.	Golden Plover	0	1	52	0	0	0	0	0	1	3	0	57	5	52	50 (30 Mar)	8	6	12 Feb	24 Oct
46.	Grey Plover	0	0	0	165	9	0	0	0	0	1	0	175	3	172	89 (30 Apr)	8	6	19 Apr	2 Oct
47.	Ringed Plover	0	0	0	1	6	11	0	0	0	0	0	18	0	18	11 ( 2 Jun)	5	4	19 Apr	2 Jun
48.	Little Ringed Plover	0	1	6	4	4	2	1	0	0	0	0	18	7	11	2 (30 Mar)	19	15	24 Feb	9 Jul
49.	Whimbrel	0	0	0	594	31	0	8	0	0	0	0	633	7	626	332 (28 Apr)	30	23	16 Apr	22 Jul
50.	Curlew	0	19	24	2	0	12	18	0	0	0	0	75	50	25	16 ( 8 Jul)	21	16	12 Feb	12 Jul
51.	Bar-tailed Godwit	0	0	0	88	33	0	0	0	0	0	0	121	5	116	61 (19 Apr)	13	10	17 Apr	18 May
52.	Black-tailed Godwit	0	1	0	0	0	0	0	0	0	0	0	1	1	0	1 (20 Feb)	1	1	20 Feb	20 Feb
53.	Icelandic Black-tailed Godwit	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (27 Apr)	1	1	27 Apr	27 Apr
54.	Knot	0	0	0	9	3	0	0	0	2	0	0	14	2	12	6 (19 Apr)	6	5	19 Apr	23 Sep
55.	Ruff	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
56.	wader sp.	0	0	0	188	4	0	0	0	0	0	0	192	0	192	150 (30 Apr)	9	7	19 Apr	3 May
57.	Sanderling	0	0	0	31	7	0	0	0	0	10	0	48	10	38	31 (19 Apr)	4	3	19 Apr	24 Oct
58.	Dunlin	0	0	116	6	0	0	0	0	0	15	0	137	15	122	56 ( 2 Mar)	10	8	2 Mar	24 Oct
59.	Calidris sp.	0	0	28	0	0	0	0	0	0	0	0	28	0	28	20 (22 Mar)	3	2	22 Mar	31 Mar
60.	Woodcock	2	0	0	0	0	0	0	0	0	0	0	2	1	1	1 (15 Jan)	3	2	15 Jan	31 Jan
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Snipe	0	4	9	4	0	0	4	0	8	2	1	32	15	17	8 ( 4 Sep)	16	12	8 Feb	3 Nov
62.	Common Sandpiper	0	0	0	0	2	0	0	0	0	0	0	2	0	2	2 ( 9 May)	1	1	9 May	9 May
63.	Green Sandpiper	0	0	17	47	3	14	2	0	0	0	0	83	17	66	30 (20 Apr)	17	13	24 Mar	12 Jul
64.	Redshank	0	0	3	31	1	0	2	0	0	0	0	37	1	36	20 (20 Apr)	14	11	23 Mar	22 Jul
65.	Wood Sandpiper	0	0	0	0	2	0	1	0	0	0	0	3	1	2	1 ( 3 May)	4	3	3 May	3 Jul
66.	Spotted Redshank	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (10 Apr)	1	1	10 Apr	10 Apr
67.	Greenshank	0	0	0	22	13	0	0	0	0	0	0	35	1	34	18 (28 Apr)	6	5	17 Apr	9 May
68.	Kittiwake	0	0	0	4	0	0	0	0	0	0	0	4	3	1	4 ( 9 Apr)	1	1	9 Apr	9 Apr
69.	Black-headed Gull	2	74	792	195	183	0	116	0	21	1174	6	2563	1440	1123	588 (26 Oct)	39	30	15 Jan	2 Nov
70.	Little Gull	0	0	1	5515	120	0	0	0	1	1	0	5638	2	5636	4205 (19 Apr)	25	19	31 Mar	2 Oct
71.	Mediterranean Gull	0	1	1	10	2	2	8	0	0	0	0	24	9	15	5 ( 9 Jul)	14	11	20 Feb	22 Jul
72.	Common Gull	30	82	112	105	23	0	3	0	12	34	2	403	109	294	55 (16 Apr)	32	25	15 Jan	3 Nov
73.	Great Black-backed Gull	10	5	8	12	4	0	0	0	1	17	0	57	34	23	12 (26 Oct)	22	17	15 Jan	26 Oct
74.	Herring Gull	20	15	469	167	25	0	25	0	2	49	7	779	105	674	186 (22 Mar)	23	18	15 Jan	3 Nov
75.	Lesser Black-backed Gull	0	40	571	802	80	0	65	0	21	52	2	1633	197	1436	317 (17 Apr)	49	38	6 Feb	3 Nov
76.	Gull-billed Tern	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 9 May)	1	1	9 May	9 May
77.	Caspian Tern	0	0	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 2 Jun)	1	1	2 Jun	2 Jun
78.	Sandwich Tern	0	0	3	146	42	145	31	0	34	3	0	404	201	203	60 (16 Jun)	47	36	24 Mar	10 Oct
79.	Little Tern	0	0	0	10	2	0	2	0	0	0	0	14	4	10	10 (27 Apr)	4	3	27 Apr	22 Jul
80.	Common Tern	0	0	0	808	83	82	12	0	0	0	0	985	90	895	301 (19 Apr)	29	22	14 Apr	9 Jul
81.	Arctic Tern	0	0	0	45	0	0	0	0	0	0	0	45	0	45	30 (22 Apr)	3	2	22 Apr	28 Apr
82.	Common/Arctic Tern	0	0	0	74	6	0	0	0	76	0	0	156	78	78	76 (23 Sep)	6	5	19 Apr	23 Sep
83.	Black Tern	0	0	0	7	0	1	0	0	0	0	0	8	0	8	2 (23 Apr)	6	5	23 Apr	2 Jun
84.	Arctic Skua	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (23 Sep)	3	2	23 Sep	26 Sep
85.	Guillemot	0	0	0	0	0	0	0	0	4	1	0	5	5	0	4 (23 Sep)	3	2	23 Sep	26 Oct
86.	Razorbill/Guillemot	414	89	4	0	0	0	0	0	7	40	0	554	548	6	412 (16 Jan)	16	12	15 Jan	26 Oct
87.	Red-throated Diver	857	613	60	6	2	0	0	0	0	5	1	1544	1436	108	844 (16 Jan)	35	27	15 Jan	3 Nov
88.	Black-throated Diver	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (30 Apr)	1	1	30 Apr	30 Apr
89.	Great Northern Diver	0	1	0	0	0	0	0	0	0	0	0	1	1	0	1 (22 Feb)	1	1	22 Feb	22 Feb
90.	diver sp.	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (22 Apr)	1	1	22 Apr	22 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Fulmar	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (20 Apr)	1	1	20 Apr	20 Apr
92.	Gannet	203	139	20	8	15	1	2	0	11	6	0	405	349	56	202 (16 Jan)	34	26	15 Jan	26 Oct
93.	Cormorant	8	287	608	626	204	44	308	0	71	547	173	2876	1462	1414	176 (24 Oct)	74	57	15 Jan	3 Nov
94.	Spoonbill	0	0	30	192	75	11	0	0	40	70	0	418	114	304	83 (28 Apr)	34	26	23 Mar	2 Oct
95.	Night Heron	0	0	0	0	0	2	0	0	0	0	0	2	0	2	1 ( 1 Jun)	3	2	1 Jun	2 Jun
96.	Cattle Egret	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (31 May)	1	1	31 May	31 May
97.	Grey Heron	0	7	26	49	42	6	14	0	1	9	1	155	43	112	10 ( 9 May)	64	49	13 Feb	3 Nov
98.	Purple Heron	0	0	0	1	5	0	0	0	0	0	0	6	1	5	3 ( 9 May)	5	4	20 Apr	20 May
99.	Great White Egret	0	7	4	3	9	6	3	0	0	1	2	35	8	27	7 (31 May)	22	17	18 Feb	3 Nov
100.	Little Egret	0	0	0	0	0	2	0	0	0	0	0	2	1	1	1 ( 2 Jun)	3	2	2 Jun	17 Jun
101.	Osprey	0	0	0	0	6	0	0	0	0	0	0	6	0	6	4 ( 9 May)	3	2	8 May	9 May
102.	Honey Buzzard	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 9 May)	1	1	9 May	9 May
103.	Sparrowhawk	0	0	4	7	5	0	0	0	0	6	3	25	10	15	4 (30 Mar)	17	13	30 Mar	2 Nov
104.	Goshawk	0	0	0	0	2	0	0	0	0	1	0	3	1	2	1 ( 8 May)	4	3	8 May	24 Oct
105.	Marsh Harrier	0	0	5	24	46	4	2	0	0	0	0	81	16	65	17 ( 9 May)	31	24	24 Mar	21 Jul
106.	Hen Harrier	0	2	0	1	0	0	0	0	0	1	1	5	3	2	1 (13 Feb)	6	5	13 Feb	3 Nov
107.	Montagu's/Pallid Harrier	0	0	0	0	1	0	0	0	0	0	0	1	1	0	1 ( 9 May)	1	1	9 May	9 May
108.	Red Kite	0	0	0	0	2	0	0	0	0	0	0	2	2	0	1 ( 9 May)	3	2	9 May	29 May
109.	Black Kite	0	0	0	0	3	0	0	0	0	0	0	3	3	0	3 ( 9 May)	1	1	9 May	9 May
110.	Common Buzzard	0	0	0	1	1	0	0	0	0	2	1	5	3	2	2 (24 Oct)	5	4	27 Apr	3 Nov
111.	Short-eared Owl	0	0	1	0	0	0	0	0	0	0	0	1	1	0	1 (31 Mar)	1	1	31 Mar	31 Mar
112.	Hoopoe	0	0	0	1	0	0	0	0	0	0	0	1	1	0	1 (23 Apr)	1	1	23 Apr	23 Apr
113.	European Bee-eater	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (29 May)	1	1	29 May	29 May
114.	Great Spotted Woodpecker	1	9	8	7	1	1	4	0	0	11	1	43	22	21	8 (20 Feb)	22	17	31 Jan	3 Nov
115.	Kestrel	0	1	1	9	5	0	1	0	2	2	1	22	7	15	4 ( 9 May)	18	14	8 Feb	2 Nov
116.	Merlin	0	0	2	3	4	0	0	0	0	0	0	9	1	8	2 ( 9 May)	10	8	30 Mar	11 May
117.	Hobby	0	0	0	1	3	0	0	0	0	0	0	4	0	4	2 ( 9 May)	4	3	28 Apr	9 May
118.	Peregrine	0	0	1	5	1	0	0	0	0	0	0	7	2	5	1 (30 Mar)	9	7	30 Mar	6 May
119.	Golden Oriole	0	0	0	0	12	3	0	0	0	0	0	15	6	9	8 ( 9 May)	8	6	9 May	16 Jun
120.	Jay	0	0	0	0	1	0	0	0	2	14	3	20	9	11	9 (10 Oct)	8	6	13 May	3 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Magpie	0	5	20	9	0	0	0	0	0	3	2	39	21	18	17 (19 Mar)	14	11	20 Feb	3 Nov
122.	Jackdaw	0	45	110	69	96	10	0	0	1	1008	2	1341	1096	245	933 (24 Oct)	49	38	18 Feb	2 Nov
123.	Rook	0	0	2	7	4	0	0	0	0	2	0	15	7	8	4 ( 9 May)	8	6	31 Mar	2 Oct
124.	Carrion Crow	0	12	16	44	22	0	0	0	0	1	0	95	9	86	21 (20 Apr)	29	22	3 Feb	2 Oct
125.	Hooded Crow	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (12 Feb)	1	1	12 Feb	12 Feb
126.	Coal Tit	0	0	0	0	0	0	0	0	0	19	5	24	24	0	16 (24 Oct)	5	4	2 Oct	3 Nov
127.	Blue Tit	0	2	3	0	1	0	0	0	0	155	10	171	165	6	135 (24 Oct)	12	9	18 Feb	3 Nov
128.	Great Tit	0	3	5	0	0	0	0	0	1	77	4	90	85	5	53 (24 Oct)	14	11	20 Feb	3 Nov
129.	Bearded Tit	0	0	0	0	0	0	0	0	0	5	0	5	5	0	5 (24 Oct)	1	1	24 Oct	24 Oct
130.	Wood Lark	0	6	21	1	0	0	0	0	0	54	6	88	58	30	26 ( 2 Oct)	17	13	18 Feb	3 Nov
131.	Skylark	0	36	2	1	1	0	0	0	0	801	8	849	817	32	749 (24 Oct)	22	17	6 Feb	3 Nov
132.	Sand Martin	0	0	41	274	197	13	10	0	0	0	0	535	103	432	95 ( 9 May)	35	27	30 Mar	21 Jul
133.	Swallow	0	0	21	568	3186	71	6	0	20	10	0	3882	535	3347	1846 ( 8 May)	47	36	26 Mar	26 Oct
134.	House Martin	0	0	0	55	255	83	0	0	1	0	0	394	91	303	106 ( 9 May)	26	20	23 Apr	26 Sep
135.	Willow Warbler	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (28 Apr)	1	1	28 Apr	28 Apr
136.	Chiffchaff	0	0	4	4	0	0	0	0	0	3	0	11	3	8	3 (31 Mar)	8	6	30 Mar	24 Oct
137.	Chiffchaff/Willow Warbler	0	0	10	0	0	0	0	0	0	1	0	11	2	9	7 (30 Mar)	5	4	24 Mar	2 Oct
138.	Blackcap	0	0	0	1	0	0	0	0	1	4	0	6	5	1	4 (10 Oct)	4	3	16 Apr	10 Oct
139.	Lesser Whitethroat	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 9 May)	1	1	9 May	9 May
140.	Firecrest	0	0	0	0	0	0	0	0	0	1	4	5	5	0	2 ( 2 Nov)	4	3	24 Oct	3 Nov
141.	Goldcrest	0	0	0	0	0	0	0	0	0	2	9	11	11	0	9 ( 3 Nov)	3	2	24 Oct	3 Nov
142.	Nuthatch	0	0	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 1 Jun)	1	1	1 Jun	1 Jun
143.	Rose-coloured Starling	0	0	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 2 Jun)	1	1	2 Jun	2 Jun
144.	Starling	2	404	275	49	29	14736	9140	0	0	42477	80071	147183	146478	705	62603 ( 3 Nov)	66	51	16 Jan	3 Nov
145.	Song Thrush	0	12	84	208	0	0	0	0	0	202	7	513	212	301	105 (24 Oct)	29	22	8 Feb	3 Nov
146.	Mistle Thrush	0	38	22	6	0	0	0	0	0	20	1	87	26	61	21 (20 Feb)	19	15	6 Feb	3 Nov
147.	Redwing	0	143	2	21	0	0	0	0	0	33918	101	34185	34156	29	33888 (24 Oct)	14	11	8 Feb	3 Nov
148.	Blackbird	0	3	1	0	0	0	0	0	0	26	30	60	58	2	23 ( 3 Nov)	10	8	8 Feb	3 Nov
149.	Fieldfare	1	5	0	5	6	0	1	0	0	236	63	317	304	13	233 (24 Oct)	14	11	15 Jan	3 Nov
150.	Ring Ouzel	0	0	10	85	3	0	0	0	0	0	0	98	7	91	24 (24 Apr)	14	11	30 Mar	13 May
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Spotted Flycatcher	0	0	0	0	6	1	0	0	0	0	0	7	1	6	3 ( 9 May)	5	4	9 May	2 Jun
152.	Black Redstart	0	0	0	0	0	0	1	0	0	0	0	1	0	1	1 (21 Jul)	1	1	21 Jul	21 Jul
153.	Whinchat	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (28 Apr)	1	1	28 Apr	28 Apr
154.	Stonechat	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (24 Oct)	1	1	24 Oct	24 Oct
155.	Wheatear	0	0	2	9	0	0	0	0	0	0	0	11	0	11	7 (28 Apr)	6	5	23 Mar	30 Apr
156.	Tree Sparrow	0	0	0	0	0	0	0	0	0	15	5	20	20	0	11 (24 Oct)	4	3	10 Oct	2 Nov
157.	House Sparrow	0	2	0	0	1	4	0	0	0	3	0	10	3	7	3 (28 Jun)	6	5	20 Feb	2 Oct
158.	Dunnock	0	4	4	1	0	0	0	0	1	40	1	51	43	8	16 ( 2 Oct)	13	10	22 Feb	2 Nov
159.	Blue-headed Wagtail	0	0	4	12	4	0	0	0	0	0	0	20	4	16	8 (23 Apr)	8	6	31 Mar	6 May
160.	Yellow Wagtail (flavissima)	0	0	0	12	0	0	0	0	0	0	0	12	0	12	7 (27 Apr)	5	4	24 Apr	28 Apr
161.	Grey-headed Wagtail	0	0	0	0	2	1	0	0	0	0	0	3	0	3	2 (29 May)	3	2	29 May	2 Jun
162.	Yellow wagtail sp.	0	0	10	600	116	5	2	0	2	0	0	735	23	712	224 (28 Apr)	38	29	30 Mar	4 Sep
163.	Grey Wagtail	0	0	1	0	0	1	0	0	0	32	4	38	36	2	14 ( 2 Oct)	9	7	2 Mar	2 Nov
164.	White Wagtail	0	7	97	17	2	1	0	0	0	0	0	124	27	97	38 (19 Mar)	26	20	18 Feb	2 Jun
165.	alba wagtail sp.	2	5	52	28	9	0	0	0	1	10	0	107	36	71	22 (24 Mar)	45	35	15 Jan	26 Oct
166.	Pied Wagtail	0	0	6	1	0	0	0	0	0	0	0	7	1	6	4 (19 Mar)	5	4	2 Mar	15 Apr
167.	Richard's Pipit	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 ( 2 Oct)	1	1	2 Oct	2 Oct
168.	Meadow Pipit	0	131	377	3631	32	2	8	0	102	7274	68	11625	7463	4162	7020 ( 2 Oct)	66	51	8 Feb	3 Nov
169.	Tree Pipit	0	0	2	71	40	1	3	0	6	5	0	128	10	118	23 (20 Apr)	40	31	31 Mar	10 Oct
170.	Water Pipit	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (18 Feb)	1	1	18 Feb	18 Feb
171.	Rock Pipit	0	0	1	0	0	0	0	0	0	1	0	2	1	1	1 (31 Mar)	3	2	31 Mar	2 Oct
172.	Rock Pipit/Water Pipit	0	1	2	0	0	0	0	0	0	1	0	4	2	2	1 ( 8 Feb)	5	4	8 Feb	24 Oct
173.	Chaffinch	0	82	315	12	7	0	0	0	124	13350	10914	24804	24383	421	9871 ( 2 Nov)	34	26	8 Feb	3 Nov
174.	Brambling	0	8	22	104	1	0	0	0	0	3292	115	3542	3410	132	3140 (24 Oct)	23	18	20 Feb	3 Nov
175.	Hawfinch	0	0	0	1	11	13	0	0	0	0	0	25	5	20	7 ( 2 Jun)	10	8	10 Apr	2 Jun
176.	Bullfinch	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (31 Mar)	1	1	31 Mar	31 Mar
177.	Common Rosefinch	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (31 May)	1	1	31 May	31 May
178.	Greenfinch	0	21	29	12	0	0	0	0	0	28	8	98	47	51	13 (24 Oct)	27	21	18 Feb	3 Nov
179.	Linnet	0	1	128	167	19	4	0	0	0	324	0	643	328	315	303 ( 2 Oct)	44	34	22 Feb	26 Oct
180.	Lesser Redpoll	0	0	0	0	0	1	1	0	0	0	0	2	1	1	1 (16 Jun)	3	2	16 Jun	21 Jul
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
181.	redpoll sp.	0	1	2	72	19	0	0	0	0	3	3	100	33	67	26 (28 Apr)	21	16	22 Feb	2 Nov
182.	Crossbill	0	3	33	20	26	14	146	0	0	42	0	284	195	89	56 (19 Jul)	34	26	23 Feb	26 Oct
183.	Goldfinch	0	10	25	41	2	1	0	0	10	32	5	126	68	58	18 (24 Oct)	34	26	20 Feb	3 Nov
184.	Serin	0	0	0	4	1	0	0	0	0	0	0	5	0	5	2 (20 Apr)	5	4	10 Apr	6 May
185.	Siskin	0	39	38	42	60	1	24	0	0	2864	2089	5157	5030	127	1881 ( 2 Nov)	56	43	19 Feb	3 Nov
186.	Lapland Bunting	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (24 Oct)	1	1	24 Oct	24 Oct
187.	Yellowhammer	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (24 Oct)	1	1	24 Oct	24 Oct
188.	Reed Bunting	0	19	49	3	0	0	1	0	0	70	13	155	87	68	34 ( 2 Mar)	26	20	13 Feb	3 Nov
	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	1	0	0	0	0	0	0	0	0	0	0	1	1	0	1 (16 Jan)	1	1	16 Jan	16 Jan
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Red Admiral	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (29 May)	1	1	29 May	29 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	0	5	0	0	0	0	0	0	0	5	0	5	5 (24 Apr)	1	1	24 Apr	24 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	1723	21727	7345	20218	9848	16983	10750	0	626	109375	93928	292523	238795	53728		100	77
	Observation hours	3:35	23:05	29:30	56:45	48:43	18:14	17:05	0:00	5:30	13:40	4:25	220:32

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Totals Berkheide (Katwijk) 2021