Also present

Totals Berkheide (Katwijk) 2023

	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	1	0	36	70	1	0	0	0	0	108	7	101	50 (25 May)	14	9	8 Feb	3 Jun
2.	Canada Goose	25	27	25	3	120	0	0	0	0	200	38	162	32 ( 3 Jun)	31	20	12 Feb	14 Jun
3.	Barnacle Goose	80	581	3241	698	94	6	0	0	0	4700	93	4607	1428 (23 Apr)	58	37	8 Feb	8 Jul
4.	Greylag Goose	146	109	184	277	57	10	0	0	0	783	400	383	83 (17 Mar)	78	50	8 Feb	8 Jul
5.	goose sp.	0	241	0	0	0	0	0	0	0	241	150	91	241 (17 Mar)	2	1	17 Mar	17 Mar
6.	Tundra Bean Goose	0	0	0	1	0	0	0	0	0	1	1	0	1 (27 May)	2	1	27 May	27 May
7.	Eurasian White-fronted Goose	398	0	1	0	0	0	0	0	0	399	0	399	336 (13 Feb)	6	4	8 Feb	30 Apr
8.	Mute Swan	0	3	16	34	8	2	0	0	0	63	39	24	9 ( 4 May)	30	19	17 Mar	8 Jul
9.	Egyptian Goose	9	21	119	31	14	7	0	0	0	201	26	175	22 (14 Apr)	36	23	26 Feb	18 Jul
10.	Shelduck	4	1	33	95	95	106	0	0	0	334	105	229	75 ( 8 Jul)	61	39	14 Feb	18 Jul
11.	Ruddy Shelduck	0	0	0	0	2	0	0	0	0	2	2	0	2 (18 Jun)	2	1	18 Jun	18 Jun
12.	Shoveler	0	0	38	3	17	7	0	0	0	65	14	51	17 (10 Jun)	14	9	3 Apr	8 Jul
13.	Gadwall	0	0	11	10	28	28	0	0	0	77	31	46	20 ( 8 Jul)	27	17	3 Apr	8 Jul
14.	Wigeon	12	0	5	0	0	0	0	0	0	17	7	10	12 (12 Feb)	5	3	12 Feb	10 Apr
15.	Mallard	0	1	34	4	5	1	0	0	0	45	21	24	8 (22 Apr)	27	17	17 Mar	14 Jul
16.	Pintail	25	1	0	2	0	0	0	0	0	28	1	27	25 (27 Feb)	5	3	27 Feb	5 May
17.	Teal	0	0	2	0	0	0	0	0	0	2	0	2	2 ( 9 Apr)	2	1	9 Apr	9 Apr
18.	duck sp.	0	4	1	0	0	0	0	0	0	5	0	5	4 (17 Mar)	3	2	17 Mar	22 Apr
19.	Red-crested Pochard	0	0	4	10	0	0	0	0	0	14	5	9	5 ( 5 May)	6	4	22 Apr	7 May
20.	Pochard	0	0	10	9	3	0	0	0	0	22	6	16	6 ( 9 Apr)	20	13	9 Apr	11 Jun
21.	Tufted Duck	0	0	4	8	6	0	0	0	0	18	4	14	4 (11 Jun)	14	9	15 Apr	11 Jun
22.	Eider	2	0	32	20	0	0	0	0	0	54	17	37	12 (15 Apr)	17	11	26 Feb	18 May
23.	Common Scoter	12	0	107	215	12	0	0	0	0	346	248	98	40 ( 7 May)	34	22	12 Feb	18 Jun
24.	Goosander	7	2	0	0	0	0	0	0	0	9	4	5	4 (12 Feb)	5	3	8 Feb	11 Mar
25.	Red-breasted Merganser	14	0	22	1	0	0	0	0	0	37	16	21	8 (26 Feb)	17	11	12 Feb	18 May
26.	Swift	0	0	126	7736	3949	5013	0	0	0	16824	4196	12628	4020 (11 Jul)	61	39	9 Apr	18 Jul
27.	Cuckoo	0	0	4	10	5	1	0	0	0	20	2	18	3 (23 Apr)	20	13	23 Apr	7 Jul
28.	Stock Dove	17	36	33	33	9	0	0	0	0	128	31	97	18 (17 Mar)	53	34	13 Feb	25 Jun
29.	Woodpigeon	190	2021	1127	510	261	5	0	0	0	4114	832	3282	1896 (17 Mar)	83	53	8 Feb	18 Jul
30.	Turtle Dove	0	0	0	2	0	0	0	0	0	2	0	2	1 ( 7 May)	3	2	7 May	20 May
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Collared Dove	3	8	39	60	26	3	0	0	0	139	42	97	10 (10 Jun)	56	36	14 Feb	14 Jul
32.	Great Crested Grebe	6	0	2	2	0	0	0	0	0	10	5	5	3 ( 8 Feb)	9	6	8 Feb	27 May
33.	Greater Flamingo	0	0	2	0	0	0	0	0	0	2	0	2	2 ( 3 Apr)	2	1	3 Apr	3 Apr
34.	Oystercatcher	0	48	130	365	86	36	0	0	0	665	261	404	133 ( 6 May)	69	44	17 Mar	18 Jul
35.	Avocet	0	0	0	2	0	0	0	0	0	2	0	2	2 (18 May)	2	1	18 May	18 May
36.	Lapwing	9	12	20	33	47	30	0	0	0	151	88	63	27 ( 8 Jul)	58	37	26 Feb	18 Jul
37.	Golden Plover	0	0	18	0	0	3	0	0	0	21	3	18	14 (21 Apr)	5	3	9 Apr	18 Jul
38.	Grey Plover	0	0	6	104	18	0	0	0	0	128	0	128	42 (27 May)	19	12	21 Apr	10 Jun
39.	Ringed Plover	0	0	3	85	19	1	0	0	0	108	1	107	68 (27 May)	16	10	21 Apr	8 Jul
40.	Charadrius h. tundrae	0	0	0	12	0	0	0	0	0	12	0	12	12 (25 May)	2	1	25 May	25 May
41.	Little Ringed Plover	0	4	16	6	6	1	0	0	0	33	13	20	4 (23 Apr)	36	23	17 Mar	11 Jul
42.	Whimbrel	0	0	295	38	1	14	0	0	0	348	17	331	80 (27 Apr)	25	16	9 Apr	18 Jul
43.	Curlew	3	0	5	9	48	39	0	0	0	104	90	14	23 ( 8 Jul)	27	17	15 Feb	11 Jul
44.	Bar-tailed Godwit	0	0	20	1	0	1	0	0	0	22	1	21	11 (22 Apr)	8	5	14 Apr	7 Jul
45.	Black-tailed Godwit	0	0	1	0	8	5	0	0	0	14	5	9	8 (10 Jun)	5	3	22 Apr	8 Jul
46.	Turnstone	0	0	0	4	0	0	0	0	0	4	0	4	3 (26 May)	3	2	25 May	26 May
47.	Knot	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 4 May)	2	1	4 May	4 May
48.	Ruff	0	0	16	5	0	2	0	0	0	23	2	21	16 (21 Apr)	5	3	21 Apr	8 Jul
49.	wader sp.	0	0	17	9	1	0	0	0	0	27	4	23	12 (27 Apr)	11	7	9 Apr	11 Jun
50.	Dunlin	0	0	0	9	0	0	0	0	0	9	0	9	9 (28 May)	2	1	28 May	28 May
51.	Little / Temminck's Stint	0	0	0	1	0	0	0	0	0	1	0	1	1 (20 May)	2	1	20 May	20 May
52.	Calidris sp.	0	0	0	3	0	0	0	0	0	3	0	3	3 (20 May)	2	1	20 May	20 May
53.	Snipe	0	0	5	0	0	2	0	0	0	7	6	1	4 ( 4 Apr)	5	3	4 Apr	14 Jul
54.	Common Sandpiper	0	0	0	0	0	1	0	0	0	1	0	1	1 ( 8 Jul)	2	1	8 Jul	8 Jul
55.	Green Sandpiper	0	0	65	1	8	10	0	0	0	84	18	66	25 (21 Apr)	31	20	3 Apr	11 Jul
56.	Redshank	0	0	45	48	1	0	0	0	0	94	1	93	37 (21 Apr)	22	14	3 Apr	12 Jun
57.	Wood Sandpiper	0	0	3	1	0	0	0	0	0	4	0	4	2 (21 Apr)	5	3	21 Apr	6 May
58.	Spotted Redshank	0	0	1	0	0	0	0	0	0	1	0	1	1 (21 Apr)	2	1	21 Apr	21 Apr
59.	Greenshank	0	0	43	22	0	0	0	0	0	65	1	64	28 (21 Apr)	14	9	15 Apr	27 May
60.	Black-headed Gull	67	9	176	221	50	4357	0	0	2	4882	4424	458	4010 ( 8 Jul)	52	33	8 Feb	27 Oct
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Little Gull	0	0	666	115	0	0	0	0	0	781	115	666	450 (19 Apr)	14	9	5 Apr	4 May
62.	Mediterranean Gull	0	2	30	3	5	26	0	0	0	66	30	36	17 ( 8 Jul)	22	14	17 Mar	18 Jul
63.	Common Gull	341	3	272	194	9	31	0	0	0	850	44	806	145 (26 Feb)	50	32	8 Feb	18 Jul
64.	Great Black-backed Gull	6	0	4	0	0	0	0	0	0	10	5	5	3 ( 8 Feb)	9	6	8 Feb	23 Apr
65.	Glaucous Gull	0	0	1	0	0	0	0	0	0	1	0	1	1 (21 Apr)	2	1	21 Apr	21 Apr
66.	Herring Gull	504	120	177	248	116	60	0	0	0	1225	71	1154	470 (27 Feb)	34	22	8 Feb	18 Jul
67.	Caspian Gull	0	1	0	1	0	0	0	0	0	2	1	1	1 (17 Mar)	3	2	17 Mar	13 May
68.	Lesser Black-backed Gull	16	116	2009	2435	361	120	0	0	0	5057	653	4404	575 (13 May)	66	42	8 Feb	18 Jul
69.	Caspian Tern	0	0	5	0	1	0	0	0	0	6	1	5	3 (23 Apr)	5	3	22 Apr	25 Jun
70.	Sandwich Tern	0	0	60	13	49	20	0	0	0	142	61	81	38 ( 4 Apr)	34	22	3 Apr	11 Jul
71.	Little Tern	0	0	8	0	0	0	0	0	0	8	0	8	8 (27 Apr)	2	1	27 Apr	27 Apr
72.	Common Tern	0	0	251	36	201	55	0	0	0	543	61	482	120 (13 Jun)	34	22	3 Apr	18 Jul
73.	Common/Arctic Tern	0	0	297	0	0	0	0	0	0	297	0	297	220 (30 Apr)	5	3	27 Apr	30 Apr
74.	Black Tern	0	0	0	10	0	0	0	0	0	10	0	10	5 ( 4 May)	5	3	4 May	7 May
75.	Red-throated Diver	32	0	1	1	0	0	0	0	0	34	24	10	24 (12 Feb)	9	6	12 Feb	25 May
76.	White Stork	0	0	5	0	0	0	0	0	0	5	0	5	5 (23 Apr)	2	1	23 Apr	23 Apr
77.	Gannet	1	0	6	0	0	0	0	0	0	7	1	6	3 ( 8 Apr)	8	5	12 Feb	27 Apr
78.	Cormorant	67	47	825	587	172	926	0	0	0	2624	1144	1480	320 ( 7 Jul)	75	48	12 Feb	18 Jul
79.	Spoonbill	0	26	169	39	25	16	0	0	0	275	24	251	44 (21 Apr)	50	32	11 Mar	14 Jul
80.	Cattle Egret	0	0	1	0	0	0	0	0	0	1	0	1	1 (23 Apr)	2	1	23 Apr	23 Apr
81.	Grey Heron	2	5	70	61	50	55	0	0	0	243	80	163	48 ( 8 Jul)	72	46	14 Feb	11 Jul
82.	Purple Heron	0	0	11	2	0	0	0	0	0	13	0	13	9 (22 Apr)	6	4	22 Apr	4 May
83.	Great White Egret	2	0	18	6	7	3	0	0	0	36	4	32	9 (23 Apr)	23	15	26 Feb	14 Jul
84.	Little Egret	0	0	0	1	0	2	0	0	0	3	1	2	2 (11 Jul)	3	2	6 May	11 Jul
85.	Osprey	0	0	3	5	0	0	0	0	0	8	1	7	2 (23 Apr)	9	6	23 Apr	27 May
86.	Sparrowhawk	0	1	26	6	2	0	0	0	1	36	3	33	8 (23 Apr)	27	17	18 Mar	27 Oct
87.	Goshawk	0	1	2	1	0	0	0	0	0	4	1	3	1 (18 Mar)	6	4	18 Mar	4 May
88.	Marsh Harrier	0	2	42	18	0	1	0	0	0	63	5	58	7 ( 4 May)	33	21	11 Mar	11 Jul
89.	Hen Harrier	2	0	2	0	0	0	0	0	0	4	2	2	1 (14 Feb)	6	4	14 Feb	22 Apr
90.	Pallid Harrier	0	0	0	1	0	0	0	0	0	1	1	0	1 ( 6 May)	2	1	6 May	6 May
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Montagu's Harrier	0	0	0	1	0	0	0	0	0	1	0	1	1 (31 May)	2	1	31 May	31 May
92.	Red Kite	0	0	2	0	0	0	0	0	0	2	1	1	1 (14 Apr)	3	2	14 Apr	23 Apr
93.	Black Kite	0	0	0	3	0	0	0	0	0	3	3	0	3 ( 4 May)	2	1	4 May	4 May
94.	Common Buzzard	0	0	10	8	3	0	0	0	0	21	4	17	5 ( 6 May)	16	10	3 Apr	18 Jun
95.	European Bee-eater	0	0	0	1	1	0	0	0	0	2	1	1	1 (20 May)	3	2	20 May	10 Jun
96.	Great Spotted Woodpecker	2	2	17	4	4	3	0	0	0	32	10	22	4 (30 Apr)	31	20	12 Feb	14 Jul
97.	Kestrel	0	1	12	24	0	2	0	0	0	39	4	35	14 ( 4 May)	23	15	17 Mar	11 Jul
98.	Red-footed Falcon	0	0	0	2	0	0	0	0	0	2	0	2	2 ( 4 May)	2	1	4 May	4 May
99.	Merlin	0	0	3	4	0	0	0	0	0	7	0	7	2 (21 Apr)	8	5	21 Apr	7 May
100.	Hobby	0	0	0	4	3	0	0	0	0	7	3	4	2 ( 4 May)	8	5	4 May	14 Jun
101.	Peregrine	0	0	2	2	0	0	0	0	0	4	0	4	1 ( 2 Apr)	6	4	2 Apr	4 May
102.	falcon sp.	0	0	0	1	0	0	0	0	0	1	0	1	1 (19 May)	2	1	19 May	19 May
103.	Rose-ringed Parakeet	0	0	0	4	0	0	0	0	0	4	4	0	4 (18 May)	2	1	18 May	18 May
104.	Golden Oriole	0	0	1	17	3	0	0	0	0	21	0	21	6 (27 May)	16	10	23 Apr	12 Jun
105.	Jay	0	0	4	0	1	0	0	0	0	5	4	1	4 (21 Apr)	3	2	21 Apr	11 Jun
106.	Magpie	0	7	15	1	0	0	0	0	0	23	4	19	11 ( 3 Apr)	8	5	17 Mar	4 May
107.	Jackdaw	41	97	123	95	59	0	0	0	0	415	101	314	97 (17 Mar)	58	37	8 Feb	25 Jun
108.	Rook	0	0	6	1	0	0	0	0	1	8	4	4	2 ( 4 Apr)	11	7	4 Apr	27 Oct
109.	Carrion Crow	15	8	151	14	1	0	0	0	0	189	9	180	36 (10 Apr)	38	24	8 Feb	11 Jun
110.	Raven	0	1	4	0	0	0	0	0	0	5	2	3	2 ( 6 Apr)	5	3	17 Mar	14 Apr
111.	Blue Tit	1	2	3	0	4	0	0	0	0	10	3	7	4 (11 Jun)	8	5	12 Feb	11 Jun
112.	Great Tit	18	3	4	0	0	0	0	0	0	25	0	25	15 (26 Feb)	11	7	13 Feb	14 Apr
113.	Wood Lark	1	3	2	0	0	0	0	0	0	6	1	5	3 (17 Mar)	5	3	27 Feb	14 Apr
114.	Skylark	1	7	1	1	0	0	0	0	1	11	3	8	4 (18 Mar)	11	7	14 Feb	27 Oct
115.	Sand Martin	0	5	267	145	20	68	0	0	0	505	148	357	65 ( 4 May)	58	37	17 Mar	14 Jul
116.	Swallow	0	0	548	1307	46	6	0	0	0	1907	206	1701	703 ( 4 May)	66	42	4 Apr	11 Jul
117.	House Martin	0	0	29	315	51	13	0	0	0	408	28	380	82 (27 May)	52	33	9 Apr	18 Jul
118.	Red-rumped Swallow	0	0	0	1	0	0	0	0	0	1	0	1	1 (31 May)	2	1	31 May	31 May
119.	swallow sp.	0	1	0	0	0	0	0	0	0	1	0	1	1 (17 Mar)	2	1	17 Mar	17 Mar
120.	Wood Warbler	0	0	0	1	0	0	0	0	0	1	1	0	1 (18 May)	2	1	18 May	18 May
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Chiffchaff	0	5	4	0	0	0	0	0	0	9	1	8	5 (17 Mar)	6	4	17 Mar	15 Apr
122.	Chiffchaff/Willow Warbler	0	0	1	1	0	0	0	0	0	2	0	2	1 ( 5 Apr)	3	2	5 Apr	18 May
123.	Icterine Warbler	0	0	0	1	0	0	0	0	0	1	0	1	1 (18 May)	2	1	18 May	18 May
124.	Blackcap	0	0	1	0	0	0	0	0	0	1	0	1	1 (30 Apr)	2	1	30 Apr	30 Apr
125.	Garden Warbler	0	0	1	0	0	0	0	0	0	1	0	1	1 (28 Apr)	2	1	28 Apr	28 Apr
126.	Lesser Whitethroat	0	0	1	1	0	0	0	0	0	2	0	2	1 (30 Apr)	3	2	30 Apr	4 May
127.	Firecrest	0	1	0	0	0	0	0	0	0	1	0	1	1 (17 Mar)	2	1	17 Mar	17 Mar
128.	Starling	63	77	211	33	32295	3760	0	0	0	36439	30911	5528	9876 (11 Jun)	81	52	8 Feb	18 Jul
129.	Purple Starling	0	0	0	1	0	0	0	0	0	1	1	0	1 ( 4 May)	2	1	4 May	4 May
130.	Song Thrush	0	67	39	0	1	0	0	0	0	107	10	97	63 (17 Mar)	23	15	12 Mar	20 Jun
131.	Mistle Thrush	2	6	9	0	5	0	0	0	0	22	3	19	3 (17 Mar)	22	14	13 Feb	18 Jun
132.	Redwing	0	6	0	0	1	0	0	0	0	7	6	1	6 (12 Mar)	3	2	12 Mar	11 Jun
133.	Blackbird	0	0	3	0	0	0	0	0	0	3	2	1	1 ( 3 Apr)	5	3	3 Apr	30 Apr
134.	Fieldfare	1	0	4	0	0	0	0	0	0	5	1	4	2 (23 Apr)	6	4	8 Feb	30 Apr
135.	Ring Ouzel	0	0	87	5	0	0	0	0	0	92	27	65	26 (21 Apr)	27	17	3 Apr	5 May
136.	Spotted Flycatcher	0	0	0	8	2	0	0	0	0	10	0	10	5 (28 May)	9	6	3 May	11 Jun
137.	Pied Flycatcher	0	0	0	1	0	0	0	0	0	1	0	1	1 ( 4 May)	2	1	4 May	4 May
138.	Whinchat	0	0	0	1	0	0	0	0	0	1	0	1	1 (27 May)	2	1	27 May	27 May
139.	Stonechat	0	0	1	0	0	0	0	0	0	1	0	1	1 (23 Apr)	2	1	23 Apr	23 Apr
140.	Wheatear	0	0	5	5	0	0	0	0	0	10	0	10	2 (23 Apr)	11	7	23 Apr	21 May
141.	House Sparrow	0	0	1	0	0	0	0	0	0	1	0	1	1 (23 Apr)	2	1	23 Apr	23 Apr
142.	Dunnock	0	5	7	0	0	0	0	0	0	12	2	10	4 (17 Mar)	8	5	17 Mar	30 Apr
143.	Blue-headed Wagtail	0	0	194	2	0	0	0	0	0	196	10	186	87 (19 Apr)	19	12	3 Apr	4 May
144.	Yellow Wagtail (flavissima)	0	0	2	2	1	0	0	0	0	5	2	3	2 ( 4 May)	6	4	23 Apr	10 Jun
145.	Grey-headed Wagtail	0	0	0	20	3	0	0	0	0	23	1	22	6 ( 4 May)	16	10	4 May	10 Jun
146.	Yellow wagtail sp.	0	0	174	186	4	8	0	0	0	372	38	334	65 ( 4 May)	38	24	14 Apr	11 Jul
147.	Grey Wagtail	0	0	0	3	2	0	0	0	0	5	0	5	2 (11 Jun)	6	4	4 May	11 Jun
148.	White Wagtail	0	36	35	13	5	3	0	0	0	92	39	53	13 (17 Mar)	38	24	11 Mar	18 Jul
149.	alba wagtail sp.	0	81	93	16	0	3	0	0	0	193	62	131	79 (17 Mar)	30	19	12 Mar	11 Jul
150.	Pied Wagtail	0	1	3	0	0	0	0	0	0	4	1	3	2 ( 3 Apr)	5	3	28 Mar	14 Apr
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Meadow Pipit	39	87	8745	226	5	11	0	0	5	9118	36	9082	2515 ( 9 Apr)	67	43	12 Feb	27 Oct
152.	Tree Pipit	0	1	129	36	4	3	0	0	0	173	11	162	25 (30 Apr)	48	31	28 Mar	8 Jul
153.	Water Pipit	0	1	0	0	0	0	0	0	0	1	0	1	1 (11 Mar)	2	1	11 Mar	11 Mar
154.	Rock Pipit	1	0	1	0	0	0	0	0	0	2	0	2	1 (27 Feb)	3	2	27 Feb	21 Apr
155.	Rock Pipit/Water Pipit	0	2	4	0	0	0	0	0	0	6	0	6	2 ( 4 Apr)	6	4	11 Mar	9 Apr
156.	Chaffinch	1084	95	181	17	5	2	0	0	20	1404	103	1301	563 (27 Feb)	53	34	13 Feb	27 Oct
157.	Brambling	25	149	206	2	0	0	0	0	0	382	3	379	132 (28 Mar)	31	20	8 Feb	26 May
158.	Hawfinch	0	1	5	35	12	0	0	0	0	53	0	53	11 (27 May)	30	19	17 Mar	13 Jun
159.	Bullfinch	0	0	0	1	0	0	0	0	2	3	2	1	2 (27 Oct)	3	2	6 May	27 Oct
160.	Greenfinch	4	10	27	8	3	0	0	0	0	52	3	49	12 ( 3 Apr)	41	26	13 Feb	10 Jun
161.	Linnet	0	9	378	87	7	0	0	0	0	481	37	444	114 ( 9 Apr)	50	32	18 Mar	11 Jun
162.	Lesser Redpoll	0	2	1	0	1	0	0	0	0	4	1	3	2 (18 Mar)	5	3	18 Mar	11 Jun
163.	redpoll sp.	0	5	53	19	1	0	0	0	0	78	10	68	13 ( 5 May)	33	21	17 Mar	18 Jun
164.	Crossbill	0	0	2	1	158	94	0	0	0	255	138	117	103 (11 Jun)	19	12	23 Apr	18 Jul
165.	Goldfinch	19	30	118	23	2	0	0	0	0	192	33	159	18 ( 3 Apr)	52	33	13 Feb	11 Jun
166.	Serin	0	0	0	0	1	0	0	0	0	1	0	1	1 ( 3 Jun)	2	1	3 Jun	3 Jun
167.	Siskin	9	31	26	1	0	1	0	0	0	68	2	66	17 (28 Mar)	28	18	26 Feb	8 Jul
168.	Reed Bunting	3	12	6	3	0	1	0	0	0	25	6	19	9 (17 Mar)	17	11	13 Feb	8 Jul
	Other species
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Brimstone	0	0	1	0	0	0	0	0	0	1	1	0	1 (23 Apr)	2	1	23 Apr	23 Apr
2.	European Peacock	0	0	1	0	0	0	0	0	0	1	0	1	1 (23 Apr)	2	1	23 Apr	23 Apr
3.	Red Admiral	0	0	0	1	1	0	0	0	0	2	1	1	1 ( 6 May)	3	2	6 May	24 Jun
	Other species
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Bumblebee sp.	0	3	2	1	0	0	0	0	0	6	2	4	3 (17 Mar)	6	4	17 Mar	6 May
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	3332	4313	23070	17323	38718	14984	0	0	32	101772	45661	56111		100	64
	Observation hours	12:25	11:35	64:40	69:17	44:05	15:00	0:00	0:00	0:30	217:32

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Totals Berkheide (Katwijk) 2023