Totals Berkheide (Katwijk) 2018

Year
Period
count-field
Also present

	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	0	214	1	24	0	0	0	239	2	237	145 (30 Mar)	7	6	17 Mar	21 May
2.	Canada Goose	23	68	17	1	90	0	0	199	45	154	85 (14 Jun)	30	25	17 Feb	27 Jun
3.	Barnacle Goose	40	443	4052	4210	35	16	0	8796	111	8685	2200 (8 May)	59	49	14 Feb	16 Jul
4.	Greylag Goose	267	513	141	78	0	4	10	1013	438	575	114 (4 Mar)	60	50	14 Feb	12 Aug
5.	goose sp.	115	0	0	110	0	0	0	225	0	225	115 (18 Feb)	2	2	18 Feb	6 May
6.	Pink-footed Goose	31	0	0	0	0	0	0	31	0	31	18 (14 Feb)	2	2	14 Feb	18 Feb
7.	Eurasian White-fronted Goose	0	390	0	0	0	0	0	390	0	390	160 (7 Mar)	6	5	4 Mar	27 Mar
8.	Mute Swan	3	5	4	60	0	0	0	72	30	42	26 (21 May)	17	14	18 Feb	26 May
9.	Whooper Swan	4	2	0	0	0	0	0	6	4	2	4 (17 Feb)	2	2	17 Feb	23 Mar
10.	Egyptian Goose	16	72	2	0	0	1	0	91	24	67	38 (24 Mar)	11	9	16 Feb	16 Jul
11.	Shelduck	3	70	101	136	8	97	20	435	110	325	39 (15 Jul)	61	51	10 Feb	9 Aug
12.	Garganey	0	2	0	2	0	0	0	4	2	2	2 (17 Mar)	2	2	17 Mar	7 May
13.	Shoveler	0	95	61	1	0	9	9	175	45	130	37 (24 Mar)	19	16	8 Mar	7 Aug
14.	Gadwall	1	3	9	15	11	4	9	52	32	20	11 (14 Jun)	20	17	20 Feb	12 Aug
15.	Wigeon	366	883	22	0	0	1	0	1272	461	811	500 (28 Mar)	17	14	10 Feb	16 Jul
16.	American Wigeon	1	0	0	0	0	0	0	1	1	0	1 (10 Feb)	1	1	10 Feb	10 Feb
17.	Mallard	0	6	13	13	0	11	3	46	26	20	7 (16 Jul)	22	18	17 Mar	9 Aug
18.	Pintail	2	21	0	0	0	0	0	23	6	17	14 (24 Mar)	7	6	14 Feb	28 Mar
19.	Teal	0	64	3	5	0	2	7	81	23	58	30 (28 Mar)	13	11	21 Mar	12 Aug
20.	duck sp.	6	20	3	0	0	9	0	38	15	23	20 (24 Mar)	5	4	16 Feb	16 Jul
21.	Red-crested Pochard	0	0	0	21	0	3	0	24	5	19	6 (12 May)	6	5	4 May	16 Jul
22.	Pochard	0	9	2	15	0	3	0	29	10	19	6 (28 Mar)	14	12	7 Mar	16 Jul
23.	Tufted Duck	0	7	0	5	0	2	0	14	2	12	7 (24 Mar)	5	4	24 Mar	16 Jul
24.	Scaup	0	1	0	0	0	0	0	1	0	1	1 (17 Mar)	1	1	17 Mar	17 Mar
25.	Eider	6	21	38	16	0	0	0	81	35	46	12 (22 Apr)	23	19	17 Feb	21 May
26.	Velvet Scoter	0	1	4	0	0	0	0	5	0	5	4 (29 Apr)	2	2	28 Mar	29 Apr
27.	Common Scoter	32	401	488	159	30	0	9	1119	485	634	209 (29 Apr)	39	32	17 Feb	7 Aug
28.	Smew	0	3	0	0	0	0	0	3	0	3	2 (4 Mar)	2	2	4 Mar	15 Mar
29.	Goosander	9	19	0	0	0	0	0	28	16	12	9 (15 Mar)	11	9	17 Feb	30 Mar
30.	Red-breasted Merganser	4	30	41	7	0	0	0	82	29	53	18 (8 Apr)	17	14	17 Feb	8 May
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Swift	0	0	33	3615	954	2018	28	6648	1943	4705	2063 (24 May)	39	32	19 Apr	12 Aug
32.	Cuckoo	0	0	9	5	0	0	0	14	7	7	4 (22 Apr)	11	9	19 Apr	24 May
33.	Stock Dove	19	122	25	14	1	1	3	185	28	157	52 (4 Mar)	55	46	14 Feb	12 Aug
34.	Woodpigeon	141	4139	526	342	12	2	1	5163	343	4820	1134 (24 Mar)	72	60	14 Feb	12 Aug
35.	Turtle Dove	0	0	0	2	0	0	0	2	0	2	2 (8 May)	1	1	8 May	8 May
36.	Collared Dove	5	19	94	36	2	5	0	161	106	55	14 (6 Apr)	49	41	17 Feb	26 Jul
37.	Crane	0	17	0	0	0	0	0	17	0	17	15 (30 Mar)	2	2	4 Mar	30 Mar
38.	Great Crested Grebe	39	16	5	5	0	3	1	69	40	29	9 (14 Feb)	23	19	10 Feb	6 Aug
39.	Oystercatcher	26	80	238	247	30	112	2	735	300	435	46 (15 Jul)	53	44	18 Feb	12 Aug
40.	Avocet	0	9	16	0	0	2	0	27	2	25	12 (19 Apr)	5	4	30 Mar	16 Jul
41.	Grey Plover	0	0	0	12	0	0	2	14	2	12	8 (21 May)	5	4	12 May	12 Aug
42.	Golden Plover	0	163	7	0	0	0	80	250	140	110	83 (16 Mar)	13	11	4 Mar	12 Aug
43.	Dotterel	0	0	0	1	0	0	0	1	0	1	1 (15 May)	1	1	15 May	15 May
44.	Ringed Plover	0	45	0	58	0	0	0	103	45	58	58 (24 May)	5	4	4 Mar	24 May
45.	Little Ringed Plover	0	5	16	3	0	3	0	27	7	20	5 (6 Apr)	19	16	16 Mar	16 Jul
46.	Lapwing	193	886	14	12	0	45	4	1154	186	968	376 (6 Mar)	36	30	17 Feb	7 Aug
47.	Whimbrel	0	1	361	26	0	14	1	403	14	389	133 (22 Apr)	31	26	31 Mar	7 Aug
48.	Curlew	16	61	2	1	10	14	1	105	21	84	32 (10 Mar)	30	25	14 Feb	7 Aug
49.	Bar-tailed Godwit	0	1	12	8	1	0	0	22	7	15	6 (29 Apr)	11	9	28 Mar	27 Jun
50.	Black-tailed Godwit	0	20	21	0	0	0	0	41	0	41	20 (6 Apr)	7	6	15 Mar	6 Apr
51.	Icelandic Black-tailed Godwit	0	1	0	0	0	0	0	1	0	1	1 (16 Mar)	1	1	16 Mar	16 Mar
52.	Snipe	1	11	4	0	0	2	40	58	41	17	32 (12 Aug)	14	12	21 Feb	12 Aug
53.	Common Sandpiper	0	0	0	1	0	0	0	1	0	1	1 (12 May)	1	1	12 May	12 May
54.	Green Sandpiper	0	1	36	2	1	4	9	53	13	40	17 (19 Apr)	23	19	25 Mar	12 Aug
55.	Wood Sandpiper	0	0	1	13	0	0	1	15	1	14	10 (7 May)	6	5	19 Apr	12 Aug
56.	Redshank	0	15	24	19	0	0	0	58	5	53	10 (19 Apr)	22	18	6 Mar	25 May
57.	Spotted Redshank	1	0	0	2	0	2	1	6	4	2	2 (8 May)	5	4	20 Feb	9 Aug
58.	Greenshank	0	0	9	18	0	0	2	29	2	27	5 (6 May)	13	11	18 Apr	12 Aug
59.	Turnstone	0	0	0	0	0	0	1	1	0	1	1 (9 Aug)	1	1	9 Aug	9 Aug
60.	Knot	0	0	0	3	0	16	0	19	16	3	16 (16 Jul)	2	2	21 May	16 Jul
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Ruff	0	34	29	0	0	5	0	68	5	63	24 (24 Mar)	7	6	24 Mar	16 Jul
62.	wader sp.	0	36	3	10	0	1	0	50	3	47	25 (28 Mar)	8	7	10 Mar	16 Jul
63.	Dunlin	0	21	3	0	0	0	0	24	18	6	6 (4 Mar)	7	6	4 Mar	21 Apr
64.	Little Tern	0	0	18	3	0	0	0	21	0	21	10 (21 Apr)	5	4	19 Apr	4 May
65.	Gull-billed Tern	0	0	0	2	0	0	0	2	0	2	2 (8 May)	1	1	8 May	8 May
66.	Arctic Tern	0	0	0	4	0	0	0	4	2	2	2 (6 May)	2	2	6 May	7 May
67.	Common Tern	0	0	119	170	0	35	25	349	42	307	52 (2 May)	28	23	7 Apr	12 Aug
68.	Sandwich Tern	0	86	154	52	0	16	13	321	128	193	60 (8 Apr)	36	30	12 Mar	12 Aug
69.	Little Gull	0	50	80	0	0	0	0	130	1	129	53 (22 Apr)	10	8	10 Mar	22 Apr
70.	Kittiwake	2	0	0	0	0	0	0	2	2	0	2 (10 Feb)	1	1	10 Feb	10 Feb
71.	Black-headed Gull	57	1444	262	1208	16	875	198	4060	1806	2254	546 (16 Jul)	63	52	14 Feb	12 Aug
72.	Mediterranean Gull	0	2	48	3	0	5	0	58	13	45	24 (19 Apr)	11	9	24 Mar	30 Jul
73.	Common Gull	175	275	33	28	2	1	6	520	227	293	100 (17 Mar)	46	38	14 Feb	12 Aug
74.	Herring Gull	164	374	195	55	0	0	25	813	114	699	142 (8 Apr)	36	30	16 Feb	12 Aug
75.	Great Black-backed Gull	2	15	5	2	0	0	0	24	2	22	4 (12 Mar)	17	14	22 Feb	26 May
76.	Glaucous Gull	0	1	0	0	0	0	0	1	1	0	1 (24 Mar)	1	1	24 Mar	24 Mar
77.	Lesser Black-backed Gull	33	1925	716	98	0	210	324	3306	632	2674	324 (12 Aug)	64	53	17 Feb	12 Aug
78.	Razorbill	1	0	0	0	0	0	0	1	0	1	1 (14 Feb)	1	1	14 Feb	14 Feb
79.	Razorbill/Guillemot	190	6	0	0	0	0	0	196	16	180	178 (24 Feb)	7	6	10 Feb	18 Mar
80.	Red-throated Diver	37	88	8	2	0	0	0	135	60	75	28 (24 Mar)	23	19	10 Feb	6 May
81.	Black-throated Diver	0	2	0	0	0	0	0	2	0	2	1 (18 Mar)	2	2	18 Mar	28 Mar
82.	diver sp.	2	0	0	0	0	0	0	2	0	2	2 (24 Feb)	1	1	24 Feb	24 Feb
83.	White Stork	0	0	3	2	0	0	0	5	0	5	3 (7 Apr)	4	3	7 Apr	27 May
84.	Gannet	10	32	24	16	6	41	1	130	47	83	39 (3 Jul)	41	34	10 Feb	12 Aug
85.	Cormorant	318	1787	749	260	210	156	458	3938	738	3200	245 (12 Mar)	64	53	10 Feb	12 Aug
86.	Cormorant (p. c. carbo)	0	0	1	0	0	0	0	1	1	0	1 (10 Apr)	1	1	10 Apr	10 Apr
87.	Spoonbill	0	115	159	177	4	5	1	461	13	448	98 (30 Mar)	43	36	6 Mar	12 Aug
88.	Little Egret	0	0	0	0	0	0	1	1	1	0	1 (9 Aug)	1	1	9 Aug	9 Aug
89.	Great White Egret	3	6	19	3	0	1	0	32	4	28	6 (7 Apr)	18	15	18 Feb	15 Jul
90.	Grey Heron	2	196	87	31	9	78	9	412	98	314	79 (16 Mar)	66	55	10 Feb	12 Aug
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Purple Heron	0	0	4	3	0	8	3	18	11	7	7 (15 Jul)	10	8	16 Apr	7 Aug
92.	Osprey	0	1	1	5	0	0	0	7	0	7	1 (30 Mar)	8	7	30 Mar	25 May
93.	Honey Buzzard	0	0	0	4	0	0	0	4	1	3	2 (24 May)	4	3	21 May	27 May
94.	Sparrowhawk	1	7	17	6	0	1	1	33	6	27	5 (24 Mar)	25	21	19 Feb	9 Aug
95.	Goshawk	0	2	1	0	0	1	0	4	2	2	1 (12 Mar)	5	4	12 Mar	30 Jul
96.	Marsh Harrier	0	19	38	42	1	0	2	102	11	91	10 (21 May)	45	37	7 Mar	9 Aug
97.	Hen Harrier	0	2	0	0	0	0	0	2	1	1	1 (10 Mar)	2	2	10 Mar	24 Mar
98.	Pallid Harrier	0	0	0	1	0	0	0	1	0	1	1 (11 May)	1	1	11 May	11 May
99.	Red Kite	0	3	0	0	0	0	0	3	0	3	1 (4 Mar)	4	3	4 Mar	24 Mar
100.	Black Kite	0	0	1	0	0	0	0	1	0	1	1 (7 Apr)	1	1	7 Apr	7 Apr
101.	White-tailed Eagle	1	0	0	1	0	0	0	2	0	2	1 (18 Feb)	2	2	18 Feb	5 May
102.	Common Buzzard	1	2	0	8	0	0	0	11	0	11	4 (8 May)	8	7	17 Feb	21 May
103.	Short-eared Owl	0	0	1	1	0	0	0	2	0	2	1 (7 Apr)	2	2	7 Apr	8 May
104.	European Bee-eater	0	0	0	3	0	0	0	3	1	2	1 (5 May)	4	3	5 May	12 May
105.	Great Spotted Woodpecker	2	5	26	2	0	6	16	57	16	41	6 (9 Aug)	29	24	14 Feb	12 Aug
106.	Kestrel	0	4	6	12	0	0	1	23	4	19	4 (7 Apr)	18	15	14 Mar	3 Aug
107.	falcon sp.	0	0	1	0	0	0	0	1	0	1	1 (7 Apr)	1	1	7 Apr	7 Apr
108.	Merlin	0	0	3	4	0	0	0	7	0	7	2 (7 May)	7	6	10 Apr	11 May
109.	Hobby	0	0	0	5	0	3	0	8	2	6	1 (6 May)	10	8	6 May	30 Jul
110.	Peregrine	1	6	6	2	0	0	0	15	5	10	3 (24 Mar)	14	12	23 Feb	21 May
111.	Golden Oriole	0	0	0	13	0	0	0	13	3	10	3 (7 May)	12	10	5 May	27 May
112.	Jay	0	0	0	4	0	0	0	4	2	2	2 (6 May)	2	2	6 May	24 May
113.	Magpie	0	10	13	0	0	0	0	23	0	23	8 (13 Apr)	6	5	12 Mar	17 Apr
114.	Jackdaw	11	250	202	228	0	0	3	694	98	596	66 (6 Apr)	54	45	18 Feb	12 Aug
115.	Rook	0	0	10	7	0	0	0	17	8	9	5 (8 Apr)	10	8	8 Apr	24 May
116.	Carrion Crow	5	34	155	40	0	0	2	236	40	196	43 (10 Apr)	40	33	18 Feb	3 Aug
117.	Hooded Crow	0	1	0	1	0	0	0	2	1	1	1 (6 Mar)	2	2	6 Mar	11 May
118.	Raven	0	0	1	0	0	0	0	1	1	0	1 (6 Apr)	1	1	6 Apr	6 Apr
119.	Coal Tit	0	1	0	0	0	0	0	1	0	1	1 (14 Mar)	1	1	14 Mar	14 Mar
120.	Blue Tit	5	5	1	0	0	0	0	11	0	11	5 (18 Feb)	6	5	18 Feb	4 Apr
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Great Tit	16	24	10	1	0	0	0	51	2	49	9 (20 Feb)	22	18	18 Feb	21 May
122.	Wood Lark	8	63	2	1	0	0	0	74	0	74	27 (4 Mar)	18	15	18 Feb	24 May
123.	Skylark	71	311	9	0	0	0	0	391	2	389	172 (4 Mar)	31	26	17 Feb	21 Apr
124.	Sand Martin	0	0	40	95	1	10	0	146	31	115	25 (8 May)	36	30	7 Apr	19 Jul
125.	Swallow	0	1	1426	1923	0	94	166	3610	1204	2406	537 (29 Apr)	51	42	15 Mar	12 Aug
126.	House Martin	0	0	79	449	0	11	34	573	88	485	136 (26 May)	34	28	6 Apr	12 Aug
127.	Long-tailed Tit	0	12	0	0	0	0	0	12	0	12	8 (12 Mar)	2	2	10 Mar	12 Mar
128.	Willow Warbler	0	0	1	0	0	0	0	1	1	0	1 (10 Apr)	1	1	10 Apr	10 Apr
129.	Chiffchaff	0	9	22	1	0	0	0	32	2	30	10 (7 Apr)	18	15	15 Mar	4 May
130.	Chiffchaff/Willow Warbler	0	0	1	4	0	0	0	5	0	5	2 (5 May)	5	4	6 Apr	21 May
131.	Garden Warbler	0	0	0	1	0	0	0	1	0	1	1 (6 May)	1	1	6 May	6 May
132.	Goldcrest	2	0	0	0	0	0	0	2	2	0	2 (18 Feb)	1	1	18 Feb	18 Feb
133.	Starling	196	4505	777	49	122	80	15	5744	447	5297	1750 (16 Mar)	67	56	10 Feb	12 Aug
134.	Song Thrush	3	437	291	0	0	1	0	732	30	702	307 (16 Mar)	36	30	18 Feb	16 Jul
135.	Mistle Thrush	17	130	6	3	2	0	0	158	10	148	44 (16 Mar)	29	24	17 Feb	14 Jun
136.	Redwing	1	791	5	0	0	0	0	797	14	783	734 (16 Mar)	16	13	19 Feb	12 Apr
137.	Blackbird	0	13	2	0	0	1	1	17	6	11	6 (24 Mar)	10	8	10 Mar	6 Aug
138.	Fieldfare	1	14	16	0	0	0	0	31	1	30	12 (7 Apr)	11	9	17 Feb	19 Apr
139.	Ring Ouzel	0	1	143	1	0	0	0	145	44	101	26 (17 Apr)	22	18	30 Mar	7 May
140.	Spotted Flycatcher	0	0	0	56	0	0	0	56	2	54	10 (7 May)	13	11	2 May	27 May
141.	Black Redstart	0	0	1	0	0	0	0	1	1	0	1 (7 Apr)	1	1	7 Apr	7 Apr
142.	Wheatear	0	1	5	9	0	0	0	15	1	14	4 (6 May)	10	8	27 Mar	24 May
143.	Tree Sparrow	0	11	1	2	0	0	0	14	2	12	4 (15 Mar)	8	7	6 Mar	27 May
144.	House Sparrow	0	4	4	2	0	12	0	22	4	18	12 (3 Jul)	10	8	6 Mar	3 Jul
145.	Dunnock	2	29	11	0	0	0	2	44	5	39	6 (7 Mar)	20	17	22 Feb	12 Aug
146.	Blue-headed Wagtail	0	0	108	178	0	2	0	288	6	282	71 (7 May)	25	21	2 Apr	30 Jul
147.	Yellow Wagtail (flavissima)	0	0	5	2	0	0	0	7	0	7	2 (19 Apr)	7	6	10 Apr	24 May
148.	Grey-headed Wagtail	0	0	0	80	0	0	0	80	0	80	47 (21 May)	12	10	2 May	26 May
149.	Yellow wagtail sp.	0	0	231	350	0	0	17	598	37	561	103 (22 Apr)	23	19	7 Apr	12 Aug
150.	Citrine Wagtail	0	0	1	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Grey Wagtail	0	8	2	3	1	0	0	14	0	14	4 (16 Mar)	11	9	15 Mar	20 Jun
152.	White Wagtail	0	288	270	24	0	12	0	594	32	562	138 (2 Apr)	43	36	6 Mar	30 Jul
153.	alba wagtail sp.	0	277	81	4	0	5	5	372	43	329	102 (24 Mar)	23	19	4 Mar	12 Aug
154.	Pied Wagtail	0	17	2	0	0	0	0	19	0	19	5 (15 Mar)	13	11	4 Mar	12 Apr
155.	Meadow Pipit	22	1328	5173	165	1	13	10	6712	36	6676	1032 (12 Apr)	71	59	10 Feb	12 Aug
156.	Tree Pipit	0	2	92	58	0	0	8	160	7	153	25 (22 Apr)	35	29	30 Mar	12 Aug
157.	Rock Pipit	0	5	0	0	0	0	0	5	0	5	1 (5 Mar)	6	5	5 Mar	25 Mar
158.	Rock Pipit/Water Pipit	0	6	1	0	0	0	0	7	0	7	3 (24 Mar)	6	5	4 Mar	12 Apr
159.	Chaffinch	108	867	118	21	0	1	1	1116	23	1093	327 (24 Mar)	53	44	14 Feb	12 Aug
160.	Brambling	3	31	45	0	0	0	0	79	2	77	18 (6 Apr)	24	20	18 Feb	21 Apr
161.	Hawfinch	0	9	20	51	0	0	0	80	10	70	13 (21 May)	29	24	7 Mar	27 May
162.	Bullfinch	1	0	5	1	0	0	0	7	2	5	1 (18 Feb)	8	7	18 Feb	21 May
163.	Greenfinch	56	185	72	1	0	10	15	339	78	261	36 (12 Mar)	53	44	14 Feb	12 Aug
164.	Linnet	0	119	460	97	0	14	0	690	42	648	82 (7 Apr)	52	43	4 Mar	16 Jul
165.	Lesser Redpoll	0	0	0	4	0	0	0	4	1	3	2 (6 May)	4	3	6 May	11 May
166.	Redpoll	12	7	14	0	0	0	0	33	5	28	12 (14 Feb)	17	14	14 Feb	21 Apr
167.	Crossbill	0	0	6	14	0	7	0	27	6	21	6 (13 Apr)	11	9	13 Apr	16 Jul
168.	Goldfinch	10	19	91	22	0	8	11	161	36	125	21 (19 Apr)	47	39	10 Feb	12 Aug
169.	Serin	0	0	1	2	0	0	0	3	1	2	1 (19 Apr)	4	3	19 Apr	6 May
170.	Siskin	73	139	38	7	0	1	0	258	52	206	29 (18 Feb)	46	38	10 Feb	16 Jul
171.	Lapland Bunting	1	0	0	0	0	1	0	2	0	2	1 (18 Feb)	2	2	18 Feb	26 Jul
172.	Snow Bunting	15	1	0	0	0	0	0	16	0	16	15 (20 Feb)	2	2	20 Feb	7 Mar
173.	Yellowhammer	1	0	0	0	0	0	0	1	1	0	1 (18 Feb)	1	1	18 Feb	18 Feb
174.	Reed Bunting	5	218	16	1	0	0	0	240	2	238	39 (7 Mar)	34	28	17 Feb	11 May
	Other species
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Brimstone	0	0	1	0	0	0	0	1	0	1	1 (7 Apr)	1	1	7 Apr	7 Apr
2.	European Peacock	0	0	2	0	0	0	0	2	0	2	2 (7 Apr)	1	1	7 Apr	7 Apr
	Other species
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Bumblebee sp.	0	0	14	0	0	0	0	14	2	12	10 (10 Apr)	4	3	6 Apr	11 Apr
	Species	Feb	Mar	Apr	May	Jun	Jul	Aug	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	3017	25704	19378	15523	1560	4136	1618	70936	11740	59196		100	83
	Observation hours	26:50	69:54	84:03	72:21	9:55	25:10	16:10	304:23

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Totals Berkheide (Katwijk) 2018