Totals De Gorzen (Ridderkerk) 2019

Year
Period
count-field
Also present

	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Canada Goose	0	2	4	0	0	0	0	51	1	3	38	99	93	6	45 (19 Aug)	10	7	27 Feb	2 Nov
2.	Barnacle Goose	0	343	1064	207	211	0	0	58	102	246	172	2403	532	1871	779 (30 Mar)	46	31	23 Feb	16 Nov
3.	Greylag Goose	0	34	92	162	80	0	0	175	79	488	80	1190	757	433	337 (5 Oct)	63	43	27 Feb	16 Nov
4.	Domestic Goose	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (18 May)	1	1	18 May	18 May
5.	Pink-footed Goose	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 (8 Nov)	1	1	8 Nov	8 Nov
6.	Tundra Bean Goose	0	0	0	0	0	0	0	0	0	79	18	97	97	0	38 (5 Oct)	10	7	5 Oct	16 Nov
7.	Eurasian White-fronted Goose	0	460	161	24	0	0	0	0	6	1251	257	2159	1366	793	719 (5 Oct)	37	25	23 Feb	16 Nov
8.	Mute Swan	0	0	10	0	3	0	0	0	7	14	0	34	21	13	8 (8 Oct)	18	12	2 Mar	25 Oct
9.	Egyptian Goose	0	1	5	0	1	0	0	32	0	1	0	40	33	7	30 (27 Aug)	10	7	27 Feb	26 Oct
10.	Shelduck	0	0	1	10	3	0	0	40	1	8	7	70	56	14	36 (14 Aug)	18	12	30 Mar	2 Nov
11.	Shoveler	0	0	49	21	11	0	0	83	664	482	7	1317	1247	70	160 (5 Oct)	57	39	23 Mar	2 Nov
12.	Gadwall	0	0	7	11	21	0	0	140	139	139	14	471	432	39	55 (5 Oct)	54	37	2 Mar	16 Nov
13.	Wigeon	0	0	178	0	0	0	0	40	105	441	96	860	683	177	142 (2 Mar)	41	28	2 Mar	16 Nov
14.	Mallard	2	0	6	18	2	0	0	8	20	13	42	111	85	26	23 (2 Nov)	41	28	23 Jan	16 Nov
15.	Pintail	0	0	0	0	0	0	0	10	4	26	4	44	42	2	10 (5 Oct)	16	11	26 Aug	9 Nov
16.	Teal	0	0	0	0	0	0	0	20	29	28	0	77	77	0	16 (14 Sep)	21	14	23 Aug	26 Oct
17.	Pochard	0	0	0	5	2	0	0	0	0	6	0	13	7	6	6 (5 Oct)	7	5	11 Apr	5 Oct
18.	Tufted Duck	8	0	2	0	3	0	0	7	3	3	0	26	18	8	8 (23 Jan)	13	9	23 Jan	17 Oct
19.	Goldeneye	0	0	0	0	0	0	0	0	0	5	0	5	5	0	3 (22 Oct)	3	2	17 Oct	22 Oct
20.	Goosander	1	0	2	0	0	0	0	0	0	0	2	5	5	0	2 (23 Mar)	6	4	23 Jan	16 Nov
21.	Red-breasted Merganser	0	0	2	0	0	0	0	0	0	2	0	4	2	2	2 (23 Mar)	3	2	23 Mar	7 Oct
22.	Swift	0	0	0	17	298	0	0	16	0	0	0	331	17	314	97 (4 May)	18	12	16 Apr	19 Aug
23.	Cuckoo	0	0	0	0	1	0	0	0	1	0	0	2	0	2	1 (18 May)	3	2	18 May	10 Sep
24.	Stock Dove	0	7	10	37	8	0	0	215	118	192	294	881	819	62	124 (9 Nov)	71	48	27 Feb	16 Nov
25.	Woodpigeon	12	16	268	142	9	0	0	628	240	2252	95	3662	3190	472	830 (24 Oct)	79	54	23 Jan	16 Nov
26.	Collared Dove	0	1	2	19	4	0	0	8	6	7	6	53	23	30	7 (23 Apr)	40	27	27 Feb	16 Nov
27.	Great Crested Grebe	0	0	3	0	0	0	0	7	1	6	0	17	14	3	4 (19 Oct)	13	9	2 Mar	24 Oct
28.	Oystercatcher	0	0	1	0	4	0	0	1	3	0	0	9	4	5	4 (24 May)	6	4	9 Mar	5 Sep
29.	Avocet	0	0	18	0	1	0	0	0	0	0	0	19	0	19	18 (30 Mar)	3	2	30 Mar	11 May
30.	Grey Plover	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (4 May)	1	1	4 May	4 May
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Golden Plover	0	0	90	33	0	0	0	5	1	53	4	186	98	88	47 (22 Oct)	24	16	2 Mar	9 Nov
32.	Ringed Plover	0	0	2	0	3	0	0	3	1	15	0	24	19	5	5 (7 Oct)	12	8	23 Mar	24 Oct
33.	Little Ringed Plover	0	0	3	7	0	0	0	1	0	0	0	11	1	10	3 (20 Apr)	9	6	23 Mar	27 Aug
34.	Lapwing	2	21	8	13	4	0	0	127	179	995	85	1434	1388	46	404 (24 Oct)	57	39	23 Jan	8 Nov
35.	Whimbrel	0	0	0	110	19	0	0	2	4	0	0	135	5	130	28 (13 Apr)	16	11	11 Apr	10 Sep
36.	Curlew	19	0	3	2	0	0	0	4	15	13	1	57	44	13	19 (23 Jan)	22	15	23 Jan	9 Nov
37.	Numenius sp.	0	0	0	0	0	0	0	0	2	0	0	2	2	0	2 (8 Sep)	1	1	8 Sep	8 Sep
38.	Black-tailed Godwit	0	20	56	58	3	0	0	47	0	0	0	184	114	70	44 (4 Apr)	22	15	23 Feb	23 Aug
39.	Woodcock	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (26 Oct)	1	1	26 Oct	26 Oct
40.	Snipe	0	0	8	7	0	0	0	277	66	101	5	464	449	15	89 (27 Aug)	41	28	30 Mar	2 Nov
41.	Common Sandpiper	0	0	0	3	1	0	0	2	1	1	0	8	4	4	2 (19 Apr)	10	7	19 Apr	19 Oct
42.	Green Sandpiper	0	1	13	36	0	0	0	9	6	4	0	69	19	50	12 (30 Mar)	34	23	27 Feb	26 Oct
43.	Wood Sandpiper	0	0	0	11	0	0	0	1	0	0	0	12	1	11	5 (19 Apr)	6	4	19 Apr	26 Aug
44.	Redshank	0	0	6	15	2	0	0	1	0	0	0	24	1	23	9 (22 Apr)	16	11	9 Mar	19 Aug
45.	Spotted Redshank	0	0	0	0	0	0	0	0	1	1	0	2	2	0	1 (7 Sep)	3	2	7 Sep	12 Oct
46.	Greenshank	0	0	0	8	5	0	0	13	0	0	0	26	17	9	4 (22 Apr)	16	11	13 Apr	31 Aug
47.	Turnstone	0	0	0	0	0	0	0	2	0	0	0	2	2	0	2 (31 Aug)	1	1	31 Aug	31 Aug
48.	Ruff	0	0	0	10	0	0	0	11	0	1	0	22	12	10	9 (22 Apr)	9	6	11 Apr	5 Oct
49.	wader sp.	0	0	0	0	0	0	0	0	10	0	0	10	10	0	10 (8 Sep)	1	1	8 Sep	8 Sep
50.	Temminck's Stint	0	0	0	1	9	0	0	0	0	0	0	10	0	10	7 (7 May)	4	3	22 Apr	7 May
51.	Dunlin	0	0	16	0	0	0	0	0	0	16	0	32	16	16	16 (23 Mar)	4	3	23 Mar	24 Oct
52.	Little Tern	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (18 May)	1	1	18 May	18 May
53.	Caspian Tern	0	0	0	0	0	0	0	2	0	0	0	2	2	0	2 (24 Aug)	1	1	24 Aug	24 Aug
54.	Black Tern	0	0	0	16	0	0	0	0	0	0	0	16	0	16	11 (20 Apr)	4	3	19 Apr	23 Apr
55.	Common Tern	0	0	0	88	30	0	0	7	2	0	0	127	9	118	38 (20 Apr)	21	14	17 Apr	5 Sep
56.	Little Gull	0	0	0	6	0	0	0	0	0	0	0	6	0	6	6 (20 Apr)	1	1	20 Apr	20 Apr
57.	Black-headed Gull	0	87	2111	782	217	0	0	87	17	132	5	3438	247	3191	927 (9 Mar)	53	36	23 Feb	2 Nov
58.	Mediterranean Gull	0	1	15	120	1	0	0	0	0	0	0	137	13	124	40 (20 Apr)	24	16	27 Feb	11 May
59.	Common Gull	43	9	62	13	2	0	0	2	2	4	1	138	55	83	43 (23 Jan)	31	21	23 Jan	16 Nov
60.	Caspian Gull	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (5 Oct)	1	1	5 Oct	5 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Herring Gull	0	40	2	16	6	0	0	5	1	2	1	73	46	27	40 (27 Feb)	25	17	27 Feb	2 Nov
62.	Great Black-backed Gull	0	0	1	4	3	0	0	7	3	3	6	27	19	8	5 (2 Nov)	22	15	9 Mar	8 Nov
63.	Lesser Black-backed Gull	0	8	30	68	9	0	0	26	15	18	1	175	67	108	18 (5 Oct)	40	27	27 Feb	8 Nov
64.	White Stork	0	0	1	21	0	0	0	0	37	2	0	61	41	20	30 (14 Sep)	10	7	23 Mar	5 Oct
65.	Cormorant	4	15	433	283	26	0	0	445	401	1360	169	3136	2382	754	412 (23 Oct)	81	55	23 Jan	16 Nov
66.	Spoonbill	0	1	13	48	21	0	0	79	49	19	0	230	139	91	37 (27 Aug)	57	39	27 Feb	10 Oct
67.	Little Egret	0	0	0	0	0	0	0	0	1	6	3	10	10	0	2 (8 Nov)	13	9	8 Sep	16 Nov
68.	Cattle Egret	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (2 Sep)	1	1	2 Sep	2 Sep
69.	Great White Egret	2	0	4	14	8	0	0	15	29	69	2	143	106	37	23 (17 Oct)	49	33	23 Jan	16 Nov
70.	Grey Heron	0	9	16	42	1	0	0	141	201	21	1	432	356	76	108 (8 Sep)	54	37	23 Feb	2 Nov
71.	Purple Heron	0	0	2	9	3	0	0	312	573	0	0	899	886	13	224 (5 Sep)	34	23	30 Mar	18 Sep
72.	Osprey	0	0	0	1	0	0	0	1	2	0	0	4	3	1	2 (10 Sep)	4	3	16 Apr	10 Sep
73.	Sparrowhawk	0	0	2	17	2	0	0	2	5	29	0	57	36	21	11 (17 Oct)	35	24	9 Mar	25 Oct
74.	Goshawk	0	0	0	1	0	0	0	0	0	2	0	3	2	1	1 (23 Apr)	4	3	23 Apr	22 Oct
75.	Marsh Harrier	1	0	5	48	1	0	0	14	27	24	1	121	67	54	13 (19 Apr)	56	38	23 Jan	8 Nov
76.	Hen Harrier	0	0	0	2	0	0	0	0	0	4	1	7	5	2	2 (24 Oct)	9	6	20 Apr	16 Nov
77.	Pallid Harrier	0	0	0	3	0	0	0	0	0	0	0	3	0	3	2 (23 Apr)	3	2	16 Apr	23 Apr
78.	Montagu's Harrier	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (20 Apr)	1	1	20 Apr	20 Apr
79.	Montagu's/Pallid Harrier	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (23 Apr)	1	1	23 Apr	23 Apr
80.	Black Kite	0	0	0	2	0	0	0	0	0	0	0	2	0	2	2 (22 Apr)	1	1	22 Apr	22 Apr
81.	White-tailed Eagle	0	0	0	1	0	0	0	0	0	0	1	2	0	2	1 (13 Apr)	3	2	13 Apr	9 Nov
82.	Common Buzzard	0	0	0	17	0	0	0	5	14	43	0	79	60	19	23 (5 Oct)	26	18	3 Apr	25 Oct
83.	Short-eared Owl	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (5 Oct)	1	1	5 Oct	5 Oct
84.	Hoopoe	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (22 Apr)	1	1	22 Apr	22 Apr
85.	Great Spotted Woodpecker	0	0	0	0	2	0	0	0	7	10	3	22	19	3	6 (14 Sep)	21	14	18 May	9 Nov
86.	Green Woodpecker	0	0	0	0	0	0	0	0	0	1	1	2	2	0	1 (22 Oct)	3	2	22 Oct	2 Nov
87.	Kestrel	0	0	1	32	0	0	0	11	12	8	0	64	30	34	12 (19 Apr)	28	19	23 Mar	24 Oct
88.	Merlin	0	0	0	9	0	0	0	1	2	4	0	16	6	10	4 (16 Apr)	15	10	16 Apr	17 Oct
89.	Hobby	0	0	0	1	1	0	0	3	2	0	0	7	5	2	2 (14 Sep)	9	6	16 Apr	14 Sep
90.	Peregrine	0	1	0	3	0	0	0	1	1	3	0	9	5	4	2 (20 Apr)	10	7	23 Feb	19 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Rose-ringed Parakeet	0	0	3	19	11	0	0	0	12	4	17	66	13	53	17 (16 Nov)	22	15	2 Mar	16 Nov
92.	Jay	0	0	0	0	0	0	0	1	27	131	1	160	150	10	115 (5 Oct)	18	12	21 Aug	2 Nov
93.	Magpie	0	0	4	2	1	0	0	4	3	34	2	50	43	7	9 (7 Oct)	31	21	9 Mar	16 Nov
94.	Jackdaw	0	41	18	42	8	0	0	62	114	208	4	497	387	110	51 (24 Oct)	60	41	27 Feb	16 Nov
95.	Rook	0	0	3	1	0	0	0	10	1	10	1	26	25	1	10 (5 Oct)	12	8	2 Mar	8 Nov
96.	Carrion Crow	0	0	16	20	12	0	0	19	26	24	3	120	72	48	9 (9 Mar)	56	38	2 Mar	16 Nov
97.	Blue Tit	0	0	0	0	0	0	0	12	40	38	1	91	91	0	24 (14 Sep)	26	18	26 Aug	2 Nov
98.	Penduline Tit	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (25 Oct)	1	1	25 Oct	25 Oct
99.	Bearded Tit	0	0	0	0	0	0	0	0	0	4	0	4	4	0	3 (24 Oct)	3	2	17 Oct	24 Oct
100.	Wood Lark	0	0	0	1	0	0	0	0	0	2	0	3	2	1	2 (22 Oct)	3	2	23 Apr	22 Oct
101.	Skylark	0	16	0	4	0	0	0	0	0	5359	89	5468	5448	20	2878 (24 Oct)	26	18	27 Feb	9 Nov
102.	Sand Martin	0	0	0	132	10	0	0	46	7	0	0	195	53	142	60 (20 Apr)	26	18	6 Apr	14 Sep
103.	Swallow	0	0	2	448	179	0	0	291	1264	136	0	2320	1688	632	482 (14 Sep)	59	40	30 Mar	24 Oct
104.	House Martin	0	0	0	19	11	0	0	27	7	1	0	65	27	38	16 (19 Apr)	25	17	11 Apr	5 Oct
105.	Chiffchaff	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (14 Sep)	3	2	14 Sep	20 Sep
106.	Starling	0	87	683	50	13	0	0	144	1673	3792	258	6700	5866	834	1393 (24 Oct)	74	50	23 Feb	16 Nov
107.	Song Thrush	0	0	0	269	0	0	0	0	20	1728	5	2022	1753	269	534 (5 Oct)	37	25	6 Apr	9 Nov
108.	Mistle Thrush	0	4	0	1	0	0	0	0	0	7	0	12	7	5	4 (23 Feb)	7	5	23 Feb	22 Oct
109.	Redwing	0	0	76	226	0	0	0	0	0	2293	2074	4669	4407	262	2072 (9 Nov)	35	24	23 Mar	9 Nov
110.	Blackbird	0	0	0	3	0	0	0	0	0	29	6	38	37	1	19 (24 Oct)	13	9	19 Apr	9 Nov
111.	Fieldfare	0	0	10	324	0	0	0	0	0	142	204	680	347	333	198 (9 Nov)	19	13	23 Mar	9 Nov
112.	Ring Ouzel	0	0	0	11	0	0	0	0	0	0	0	11	0	11	5 (23 Apr)	6	4	19 Apr	23 Apr
113.	Whinchat	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (14 Sep)	1	1	14 Sep	14 Sep
114.	Wheatear	0	0	0	2	0	0	0	0	0	0	0	2	0	2	1 (19 Apr)	3	2	19 Apr	20 Apr
115.	Tree Sparrow	0	0	0	0	0	0	0	0	0	82	0	82	81	1	28 (22 Oct)	7	5	5 Oct	24 Oct
116.	Blue-headed Wagtail	0	0	0	25	2	0	0	13	1	0	0	41	14	27	7 (20 Apr)	21	14	3 Apr	14 Sep
117.	Yellow Wagtail (flavissima)	0	0	0	1	1	0	0	0	0	0	0	2	0	2	1 (20 Apr)	3	2	20 Apr	4 May
118.	Yellow wagtail sp.	0	0	0	186	14	0	0	19	22	0	0	241	42	199	90 (20 Apr)	28	19	3 Apr	21 Sep
119.	Grey Wagtail	0	0	1	0	0	0	0	0	4	33	0	38	36	2	8 (8 Oct)	19	13	30 Mar	26 Oct
120.	White Wagtail	0	0	1	3	0	0	0	19	0	0	0	23	19	4	14 (14 Aug)	7	5	9 Mar	21 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	alba wagtail sp.	1	2	18	34	6	0	0	53	35	108	0	257	191	66	34 (10 Oct)	60	41	23 Jan	25 Oct
122.	Tawny Pipit	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (27 Aug)	1	1	27 Aug	27 Aug
123.	Meadow Pipit	0	0	0	25717	2	0	0	6	1402	2280	11	29418	3699	25719	12045 (20 Apr)	54	37	3 Apr	8 Nov
124.	Tree Pipit	0	0	0	46	0	0	0	14	2	0	0	62	16	46	26 (20 Apr)	13	9	19 Apr	20 Sep
125.	Red-throated Pipit	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (19 Apr)	1	1	19 Apr	19 Apr
126.	Water Pipit	0	0	0	1	0	0	0	0	0	16	0	17	14	3	10 (18 Oct)	10	7	6 Apr	24 Oct
127.	Rock Pipit	0	0	0	0	0	0	0	0	0	2	0	2	2	0	2 (5 Oct)	1	1	5 Oct	5 Oct
128.	Rock Pipit/Water Pipit	0	0	0	0	0	0	0	0	0	17	0	17	17	0	7 (23 Oct)	10	7	5 Oct	24 Oct
129.	Chaffinch	0	17	35	13	0	0	0	0	20	4111	233	4429	4363	66	1143 (22 Oct)	46	31	23 Feb	16 Nov
130.	Brambling	0	0	0	1	0	0	0	0	0	13	3	17	16	1	8 (22 Oct)	9	6	19 Apr	9 Nov
131.	Hawfinch	0	0	0	0	0	0	0	0	3	0	0	3	3	0	3 (24 Sep)	1	1	24 Sep	24 Sep
132.	Greenfinch	0	0	1	1	0	0	0	0	3	7	2	14	12	2	2 (21 Sep)	18	12	9 Mar	16 Nov
133.	Linnet	0	1	4	55	6	0	0	26	22	80	0	194	117	77	23 (19 Apr)	54	37	27 Feb	26 Oct
134.	Crossbill	0	0	0	0	0	0	0	2	0	18	0	20	20	0	14 (17 Oct)	4	3	26 Aug	17 Oct
135.	Goldfinch	0	0	1	7	2	0	0	9	40	35	1	95	85	10	17 (5 Oct)	38	26	2 Mar	2 Nov
136.	Siskin	0	0	0	0	0	0	0	0	0	1225	10	1235	1235	0	366 (7 Oct)	25	17	5 Oct	16 Nov
137.	Lapland Bunting	0	0	0	0	0	0	0	0	0	3	0	3	3	0	1 (8 Oct)	4	3	8 Oct	24 Oct
138.	Yellowhammer	0	0	0	0	0	0	0	0	0	1	1	2	2	0	1 (18 Oct)	3	2	18 Oct	2 Nov
139.	Ortolan Bunting	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (27 Aug)	1	1	27 Aug	27 Aug
140.	Reed Bunting	3	0	2	16	0	0	0	11	41	413	46	532	514	18	76 (22 Oct)	50	34	23 Jan	16 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.	Small Tortoiseshell	0	0	0	2	0	0	0	0	0	0	0	2	0	2	1 (19 Apr)	3	2	19 Apr	20 Apr
2.	Brimstone	0	0	0	4	0	0	0	0	0	0	0	4	0	4	2 (19 Apr)	3	2	19 Apr	20 Apr
3.	European Peacock	0	0	1	6	0	0	0	0	0	0	0	7	0	7	4 (19 Apr)	4	3	30 Mar	20 Apr
4.	Green-veined White	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (20 Apr)	1	1	20 Apr	20 Apr
5.	Small White	0	0	0	17	0	0	0	0	0	0	0	17	0	17	13 (19 Apr)	3	2	19 Apr	20 Apr
6.	white sp. (butterfly)	0	0	0	2	0	0	0	0	3	0	0	5	3	2	3 (21 Sep)	3	2	19 Apr	21 Sep
7.	Red Admiral	0	0	0	0	0	0	0	2	5	1	0	8	8	0	3 (14 Sep)	7	5	24 Aug	5 Oct
8.	Painted Lady	0	0	0	0	0	0	0	2	0	0	0	2	2	0	2 (31 Aug)	1	1	31 Aug	31 Aug
	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	2	16	10	0	0	0	1	0	0	29	1	28	9 (19 Apr)	12	8	30 Mar	21 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	98	1245	5669	30386	1332	0	0	4004	8020	31048	4396	86198	47394	38804		100	68
	Observation hours	1:40	3:50	12:54	48:21	13:52	0:00	0:00	33:00	46:34	48:07	8:05	216:23

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Trektellen

Totals De Gorzen (Ridderkerk) 2019