Also present

Totals Dordtse Biesbosch 2021

	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Dark-bellied Brent Goose	0	0	0	9	0	0	0	0	0	0	0	0	9	1	8	8 (20 Apr)	1	2	20 Apr	24 Apr
2.	Canada Goose	0	0	11	3	0	174	0	0	9	4	0	0	201	13	188	116 ( 3 Jun)	8	12	1 Mar	9 Oct
3.	Barnacle Goose	1529	9543	2928	778	48	43	0	0	0	169	1010	39	16087	2298	13789	4454 (11 Feb)	45	64	14 Jan	13 Dec
4.	Greylag Goose	27	290	267	38	0	0	0	0	125	1048	1288	5	3088	2337	751	389 ( 4 Nov)	43	61	16 Jan	13 Dec
5.	goose sp.	28	362	84	0	0	0	0	0	0	37	181	0	692	216	476	171 (20 Feb)	12	17	26 Jan	23 Nov
6.	Tundra Bean Goose	286	276	0	0	0	0	0	0	50	101	255	0	968	324	644	178 (23 Jan)	22	32	14 Jan	23 Nov
7.	Eurasian White-fronted Goose	501	3646	2054	0	0	0	0	0	360	1268	4830	37	12696	4145	8551	2333 (22 Nov)	51	73	14 Jan	6 Dec
8.	Black Swan	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (23 Oct)	1	1	23 Oct	23 Oct
9.	Mute Swan	0	5	5	0	0	0	0	3	0	3	0	0	16	11	5	5 ( 9 Feb)	3	4	9 Feb	26 Oct
10.	Bewick's Swan	0	38	0	0	0	0	0	0	0	0	0	0	38	7	31	27 ( 4 Feb)	1	2	4 Feb	9 Feb
11.	Whooper Swan	5	23	0	0	0	0	0	0	0	0	0	0	28	12	16	23 ( 9 Feb)	1	2	25 Jan	9 Feb
12.	Egyptian Goose	0	19	17	4	2	0	0	7	7	103	32	2	193	168	25	52 (29 Oct)	16	23	8 Feb	13 Dec
13.	Shelduck	6	18	28	35	9	13	0	0	4	35	33	0	181	72	109	11 (18 Feb)	26	37	25 Jan	22 Nov
14.	Ruddy Shelduck	0	0	0	0	0	1	0	0	14	10	0	0	25	19	6	6 (30 Sep)	6	8	1 Jun	17 Oct
15.	Garganey	0	0	0	0	0	0	0	0	4	0	0	0	4	4	0	4 (16 Sep)	1	1	16 Sep	16 Sep
16.	Shoveler	0	24	140	142	12	14	2	6	36	40	13	4	433	115	318	56 (24 Mar)	29	41	11 Feb	13 Dec
17.	Gadwall	0	9	6	7	5	0	10	43	4	61	0	0	145	120	25	43 ( 7 Oct)	9	13	8 Feb	7 Oct
18.	Wigeon	2	326	250	0	0	0	0	0	266	117	11	15	987	589	398	238 ( 1 Mar)	19	27	25 Jan	13 Dec
19.	Mallard	0	14	0	0	0	0	0	0	18	0	20	3	55	55	0	12 ( 6 Nov)	6	9	8 Feb	13 Dec
20.	Pintail	7	140	231	18	0	0	1	9	68	129	67	24	694	375	319	109 (23 Mar)	37	53	14 Jan	13 Dec
21.	Teal	0	0	0	0	0	0	0	0	283	0	0	0	283	283	0	165 (20 Sep)	3	4	14 Sep	21 Sep
22.	Pochard	0	0	0	0	0	0	0	0	5	1	0	0	6	6	0	4 (21 Sep)	2	3	9 Sep	2 Oct
23.	Ferruginous Duck	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 ( 9 Oct)	1	1	9 Oct	9 Oct
24.	Tufted Duck	0	161	2	0	0	0	131	91	9	5	0	0	399	236	163	122 (20 Feb)	11	16	20 Feb	9 Oct
25.	Scaup	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 ( 9 Oct)	1	1	9 Oct	9 Oct
26.	Goldeneye	6	29	102	0	0	0	8	0	3	2	3	0	153	18	135	30 (20 Mar)	14	20	30 Jan	15 Nov
27.	Goosander	4	17	25	10	0	0	0	0	0	0	5	4	65	12	53	5 (21 Feb)	17	24	14 Jan	13 Dec
28.	Red-breasted Merganser	0	0	5	0	0	0	0	0	0	0	0	0	5	0	5	3 (24 Mar)	1	2	24 Mar	25 Mar
29.	Swift	0	0	0	5935	663	1567	2823	836	1	0	0	0	11825	3657	8168	2259 (26 Apr)	22	31	19 Apr	9 Sep
30.	Cuckoo	0	0	0	0	7	4	1	1	0	0	0	0	13	2	11	5 ( 1 May)	5	7	1 May	23 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Stock Dove	2	29	18	13	4	0	5	36	48	174	61	26	416	356	60	57 ( 5 Oct)	40	57	25 Jan	13 Dec
32.	Woodpigeon	61	2983	2047	341	35	16	7	2	148	5736	1449	0	12825	7798	5027	1076 (23 Oct)	77	110	23 Jan	22 Nov
33.	Turtle Dove	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (29 May)	1	1	29 May	29 May
34.	Collared Dove	0	0	5	2	0	0	0	0	1	12	0	0	20	13	7	5 (29 Oct)	7	10	24 Mar	29 Oct
35.	Spotted Crake	0	0	0	0	0	0	0	0	2	0	0	0	2	2	0	2 (14 Sep)	1	1	14 Sep	14 Sep
36.	Crane	0	10	5	0	0	0	0	0	0	0	0	0	15	1	14	9 (21 Feb)	3	4	21 Feb	8 Mar
37.	Great Crested Grebe	0	0	1	3	1	4	2	1	1	0	0	0	13	6	7	2 ( 8 Apr)	7	10	24 Mar	30 Sep
38.	Oystercatcher	0	24	105	80	37	10	14	0	0	0	0	0	270	18	252	45 ( 6 Mar)	24	34	21 Feb	24 Jul
39.	Avocet	0	0	60	10	1	2	0	0	0	0	0	0	73	0	73	42 (25 Mar)	8	11	22 Mar	1 Jun
40.	Lapwing	150	3352	520	26	7	88	110	43	49	2233	1237	0	7815	5006	2809	1075 ( 7 Feb)	52	75	23 Jan	22 Nov
41.	Golden Plover	119	146	34	4	0	0	0	0	3	86	20	0	412	94	318	144 (21 Feb)	12	17	25 Jan	23 Nov
42.	Grey Plover	0	0	0	0	0	0	0	0	0	5	0	0	5	5	0	2 ( 2 Oct)	3	4	2 Oct	12 Oct
43.	Ringed Plover	0	0	0	0	0	2	0	0	0	1	0	0	3	1	2	2 ( 3 Jun)	1	2	3 Jun	9 Oct
44.	Little Ringed Plover	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (22 Apr)	1	1	22 Apr	22 Apr
45.	Whimbrel	0	0	0	231	1	0	0	20	0	0	0	0	252	20	232	130 (19 Apr)	9	13	14 Apr	30 Aug
46.	Curlew	8	23	26	80	0	0	1	8	3	4	0	0	153	19	134	48 (19 Apr)	23	33	23 Jan	26 Oct
47.	Black-tailed Godwit	0	80	704	188	0	0	7	14	0	0	0	0	993	23	970	122 ( 2 Mar)	23	33	18 Feb	24 Aug
48.	Knot	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (13 May)	1	1	13 May	13 May
49.	Ruff	0	0	48	32	0	3	1	0	70	4	0	0	158	75	83	66 ( 4 Sep)	8	11	23 Mar	9 Oct
50.	wader sp.	0	0	0	0	0	0	0	9	0	0	0	0	9	9	0	9 (23 Aug)	1	1	23 Aug	23 Aug
51.	Dunlin	0	0	8	4	0	0	0	0	0	0	0	0	12	0	12	5 (27 Mar)	3	5	15 Mar	26 Apr
52.	Little Stint	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (20 Apr)	1	1	20 Apr	20 Apr
53.	Woodcock	0	1	2	0	0	0	0	0	0	0	0	0	3	1	2	1 ( 7 Feb)	2	3	7 Feb	8 Mar
54.	Jack Snipe	0	3	0	0	0	0	0	0	0	0	0	0	3	3	0	3 ( 7 Feb)	1	1	7 Feb	7 Feb
55.	Snipe	0	47	5	25	0	0	2	39	171	79	36	0	404	373	31	46 ( 7 Feb)	32	46	7 Feb	22 Nov
56.	Common Sandpiper	0	0	0	7	0	6	1	10	9	0	0	0	33	26	7	6 (24 Jun)	11	16	21 Apr	25 Sep
57.	Green Sandpiper	0	2	11	16	2	1	5	23	8	8	2	0	78	47	31	18 (14 Aug)	26	37	21 Feb	9 Nov
58.	Redshank	0	0	31	37	5	3	1	0	0	0	0	0	77	2	75	15 (24 Mar)	18	26	8 Mar	10 Jul
59.	Spotted Redshank	0	0	2	13	0	0	1	0	2	0	0	0	18	3	15	12 (26 Apr)	5	7	1 Mar	16 Sep
60.	Greenshank	0	0	0	178	7	0	0	1	28	0	0	0	214	29	185	50 (27 Apr)	15	22	12 Apr	23 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Black-headed Gull	72	2117	4054	2039	367	199	455	777	1721	1412	540	0	13753	5118	8635	1378 ( 8 Mar)	83	119	16 Jan	23 Nov
62.	Little Gull	0	0	0	318	0	0	0	0	0	0	0	0	318	0	318	136 (26 Apr)	6	9	19 Apr	28 Apr
63.	Mediterranean Gull	0	0	48	356	30	15	3	0	0	0	0	0	452	29	423	68 (18 Apr)	25	36	8 Mar	29 Jul
64.	Common Gull	5	29	27	4	1	0	1	0	3	8	173	2	253	197	56	159 (22 Nov)	28	40	23 Jan	6 Dec
65.	Great Black-backed Gull	3	20	35	20	2	0	4	26	33	26	0	1	170	90	80	10 (25 Sep)	40	57	16 Jan	13 Dec
66.	Herring Gull	4	56	81	78	25	12	4	24	14	14	21	6	339	83	256	19 (21 Apr)	51	73	30 Jan	13 Dec
67.	Caspian Gull	0	3	0	1	0	0	1	0	0	0	0	0	5	1	4	1 (18 Feb)	3	5	18 Feb	10 Jul
68.	Yellow-legged Gull	0	3	3	7	0	1	1	0	3	5	1	0	24	10	14	2 (13 Apr)	13	19	9 Feb	22 Nov
69.	Lesser Black-backed Gull	0	95	221	114	30	35	24	80	33	21	54	2	709	219	490	51 (20 Feb)	60	86	18 Feb	13 Dec
70.	Caspian Tern	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (21 Apr)	1	1	21 Apr	21 Apr
71.	Common Tern	0	0	0	1096	15	7	19	200	17	0	0	0	1354	236	1118	310 (26 Apr)	23	33	14 Apr	14 Sep
72.	Black Tern	0	0	0	92	0	0	0	0	0	0	0	0	92	0	92	51 (27 Apr)	5	7	21 Apr	28 Apr
73.	Red-throated Diver	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (22 Apr)	1	1	22 Apr	22 Apr
74.	White Stork	0	6	0	0	1	0	0	0	2	0	0	0	9	2	7	4 (21 Feb)	3	5	18 Feb	2 Sep
75.	Cormorant	0	134	573	274	16	2	15	48	566	1908	557	0	4093	3209	884	737 ( 7 Oct)	52	75	9 Feb	22 Nov
76.	Spoonbill	0	2	48	73	30	15	6	18	57	112	1	0	362	204	158	66 ( 5 Oct)	36	51	25 Feb	22 Nov
77.	Cattle Egret	0	0	0	0	0	0	0	4	5	0	0	0	9	9	0	4 (30 Aug)	3	4	30 Aug	25 Sep
78.	Grey Heron	0	2	54	45	14	0	4	14	33	2	1	0	169	54	115	15 (27 Apr)	39	56	23 Feb	4 Nov
79.	Purple Heron	0	0	1	10	2	1	0	9	20	1	0	0	44	29	15	16 (13 Sep)	11	16	30 Mar	23 Oct
80.	Great White Egret	0	8	16	20	1	0	3	11	22	36	1	0	118	75	43	16 ( 9 Oct)	31	44	12 Feb	4 Nov
81.	Little Egret	0	0	1	10	6	3	1	3	12	3	0	0	39	20	19	7 (25 Sep)	15	22	24 Mar	9 Oct
82.	Osprey	0	0	1	2	0	0	0	2	1	2	0	0	8	5	3	2 ( 9 Aug)	4	6	20 Mar	7 Oct
83.	Honey Buzzard	0	0	0	0	2	0	0	4	0	0	0	0	6	4	2	2 (21 Aug)	3	5	29 May	21 Aug
84.	Sparrowhawk	0	0	5	7	1	0	0	3	8	55	10	0	89	76	13	18 (28 Oct)	27	38	8 Mar	9 Nov
85.	Goshawk	0	0	0	0	0	0	0	1	0	0	1	0	2	2	0	1 (23 Aug)	1	2	23 Aug	6 Nov
86.	Marsh Harrier	0	0	6	20	2	0	0	4	5	12	1	0	50	22	28	5 (27 Apr)	20	29	1 Mar	20 Nov
87.	Hen Harrier	0	5	2	3	0	0	0	0	0	2	2	0	14	5	9	2 (23 Feb)	9	13	11 Feb	14 Nov
88.	Red Kite	0	0	0	1	0	0	0	0	0	1	0	0	2	1	1	1 (27 Apr)	1	2	27 Apr	4 Oct
89.	Black Kite	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (24 Apr)	1	1	24 Apr	24 Apr
90.	White-tailed Eagle	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (16 Sep)	1	1	16 Sep	16 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Common Buzzard	0	2	4	11	1	0	0	6	15	67	15	0	121	103	18	40 (28 Oct)	22	32	22 Feb	14 Nov
92.	Hoopoe	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (27 Apr)	1	1	27 Apr	27 Apr
93.	Lesser Spotted Woodpecker	0	0	1	1	0	0	0	0	1	0	0	0	3	1	2	1 (20 Mar)	2	3	20 Mar	25 Sep
94.	Great Spotted Woodpecker	0	1	2	2	0	0	1	1	14	25	2	0	48	44	4	7 ( 7 Oct)	17	25	7 Feb	4 Nov
95.	Green Woodpecker	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 ( 2 Oct)	1	1	2 Oct	2 Oct
96.	Kestrel	0	0	0	3	1	0	0	2	0	8	0	0	14	10	4	2 ( 5 Oct)	8	11	1 Apr	29 Oct
97.	Merlin	0	0	0	4	0	0	0	0	2	5	1	0	12	8	4	2 (17 Apr)	6	9	17 Apr	4 Nov
98.	Hobby	0	0	0	0	1	1	1	2	3	3	0	0	11	9	2	3 ( 2 Oct)	6	9	29 May	2 Oct
99.	Peregrine	0	2	1	0	0	0	0	0	2	1	1	0	7	4	3	2 (20 Feb)	4	6	20 Feb	4 Nov
100.	Great Grey Shrike	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (22 Nov)	1	1	22 Nov	22 Nov
101.	Golden Oriole	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 ( 7 Aug)	1	1	7 Aug	7 Aug
102.	Jay	0	0	2	17	2	3	0	3	1610	932	3	1	2573	2132	441	742 (25 Sep)	30	43	30 Mar	6 Dec
103.	Magpie	0	0	5	11	0	0	0	0	4	2	9	0	31	15	16	5 ( 1 Apr)	12	17	22 Mar	22 Nov
104.	Jackdaw	0	60	157	45	15	2	0	0	97	975	152	0	1503	1230	273	304 (28 Oct)	45	65	9 Feb	22 Nov
105.	Rook	0	0	2	10	0	0	0	0	9	3	16	0	40	28	12	5 (28 Apr)	11	16	29 Mar	22 Nov
106.	Carrion Crow	0	13	271	84	25	10	0	12	86	218	119	4	842	439	403	71 ( 1 Mar)	59	84	20 Feb	6 Dec
107.	Coal Tit	0	0	0	0	0	0	0	0	1	411	5	0	417	407	10	72 (23 Oct)	13	18	18 Sep	14 Nov
108.	Willow Tit	0	2	2	0	0	0	0	2	5	3	0	1	15	11	4	2 (21 Aug)	8	11	23 Feb	13 Dec
109.	Blue Tit	9	50	48	8	1	27	42	19	276	4389	212	2	5083	4478	605	1254 (23 Oct)	66	94	23 Jan	13 Dec
110.	Great Tit	7	46	52	27	8	10	24	8	122	342	31	3	680	490	190	50 (18 Oct)	59	85	23 Jan	13 Dec
111.	Penduline Tit	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 ( 2 Oct)	1	1	2 Oct	2 Oct
112.	Bearded Tit	0	0	0	0	0	0	0	0	0	27	21	0	48	48	0	12 ( 8 Nov)	8	11	2 Oct	11 Nov
113.	Wood Lark	0	2	0	0	0	0	0	0	0	10	4	0	16	14	2	4 (18 Oct)	6	9	21 Feb	14 Nov
114.	Skylark	0	1407	7	0	0	0	0	0	0	9796	2877	0	14087	12862	1225	6546 (29 Oct)	27	39	7 Feb	22 Nov
115.	Sand Martin	0	0	7	3081	343	2	19	4305	782	0	0	0	8539	5106	3433	2904 ( 7 Aug)	30	43	27 Mar	23 Sep
116.	Swallow	0	0	13	889	61	13	107	270	3039	619	39	0	5050	4068	982	1415 (11 Sep)	50	72	26 Mar	22 Nov
117.	House Martin	0	0	0	22	2	0	4	13	560	11	0	0	612	588	24	188 (23 Sep)	16	23	17 Apr	5 Oct
118.	Long-tailed Tit	0	0	0	0	0	0	0	0	53	169	35	0	257	239	18	47 ( 9 Oct)	12	17	9 Sep	22 Nov
119.	Willow Warbler	0	0	1	1	0	0	1	3	7	0	0	0	13	11	2	2 (30 Aug)	7	10	30 Mar	28 Sep
120.	Chiffchaff	0	4	10	4	0	0	0	14	80	38	3	0	153	127	26	11 ( 4 Sep)	31	44	21 Feb	22 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Chiffchaff/Willow Warbler	0	0	6	9	3	0	0	3	13	1	0	0	35	17	18	6 (30 Mar)	7	10	30 Mar	7 Oct
122.	Sedge Warbler	0	0	0	3	0	0	0	1	0	0	0	0	4	1	3	3 ( 1 Apr)	1	2	1 Apr	30 Aug
123.	Reed Warbler	0	0	0	0	0	0	0	6	6	0	0	0	12	12	0	2 (18 Aug)	6	8	18 Aug	25 Sep
124.	Savi's Warbler	0	0	0	1	0	0	2	0	0	0	0	0	3	2	1	2 (10 Jul)	1	2	22 Apr	10 Jul
125.	Grasshopper Warbler	0	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (29 Mar)	1	1	29 Mar	29 Mar
126.	Blackcap	0	0	0	2	0	0	0	0	2	0	0	0	4	2	2	1 (22 Apr)	3	4	22 Apr	21 Sep
127.	Garden Warbler	0	0	0	0	1	0	0	7	1	0	0	0	9	8	1	2 (21 Aug)	5	7	1 May	9 Sep
128.	Lesser Whitethroat	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (18 Aug)	1	1	18 Aug	18 Aug
129.	Whitethroat	0	0	0	1	0	0	0	1	1	0	0	0	3	2	1	1 (26 Apr)	2	3	26 Apr	4 Sep
130.	Firecrest	0	0	0	0	0	0	0	0	0	11	1	0	12	12	0	3 (23 Oct)	5	7	12 Oct	2 Nov
131.	Goldcrest	0	1	0	0	0	0	0	0	2	4	0	0	7	6	1	2 (18 Sep)	3	5	21 Feb	12 Oct
132.	Wren	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (11 Oct)	1	1	11 Oct	11 Oct
133.	Nuthatch	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (18 Sep)	1	1	18 Sep	18 Sep
134.	Short-toed Tree Creeper	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 ( 7 Oct)	1	1	7 Oct	7 Oct
135.	Starling	32	1262	1615	72	179	1553	185	1014	718	11939	5731	59	24359	22006	2353	3174 ( 9 Oct)	80	114	14 Jan	13 Dec
136.	Song Thrush	1	0	11	6	1	0	0	0	111	1151	80	0	1361	1342	19	696 ( 9 Oct)	35	50	23 Jan	22 Nov
137.	Mistle Thrush	0	2	0	0	0	0	0	0	0	24	2	0	28	27	1	7 (25 Oct)	6	9	12 Feb	22 Nov
138.	Redwing	15	81	1119	1	0	0	0	0	0	12829	2166	0	16211	15035	1176	4296 (25 Oct)	36	51	25 Jan	23 Nov
139.	Blackbird	1	11	16	13	1	0	0	0	8	148	100	0	298	260	38	40 (29 Oct)	42	60	31 Jan	23 Nov
140.	Fieldfare	3	21	1102	125	0	0	0	0	0	34	763	0	2048	810	1238	1085 (22 Mar)	22	31	31 Jan	22 Nov
141.	Ring Ouzel	0	0	1	10	0	0	0	0	0	6	0	0	17	6	11	5 (25 Oct)	6	8	30 Mar	28 Oct
142.	Spotted Flycatcher	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 ( 6 Aug)	1	1	6 Aug	6 Aug
143.	Robin	0	0	0	0	0	0	0	0	4	0	0	0	4	4	0	2 (27 Sep)	2	3	21 Sep	27 Sep
144.	Nightingale	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (19 Apr)	1	1	19 Apr	19 Apr
145.	Redstart	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (31 May)	1	1	31 May	31 May
146.	Wheatear	0	0	0	1	0	0	0	0	2	0	0	0	3	2	1	1 (24 Apr)	2	3	24 Apr	4 Sep
147.	Tree Sparrow	0	0	0	0	0	0	0	12	0	94	1	0	107	107	0	30 (29 Oct)	8	12	21 Aug	2 Nov
148.	House Sparrow	0	0	0	0	0	0	0	0	6	1	0	0	7	7	0	6 (28 Sep)	1	2	28 Sep	9 Oct
149.	Dunnock	0	0	0	0	1	0	0	2	15	18	2	0	38	37	1	4 ( 7 Oct)	15	21	31 May	11 Nov
150.	Blue-headed Wagtail	0	0	0	50	8	2	1	26	91	5	0	0	183	125	58	46 ( 4 Sep)	29	41	1 Apr	5 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Yellow Wagtail (flavissima)	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (23 Apr)	1	1	23 Apr	23 Apr
152.	Grey Wagtail	0	1	2	0	0	0	0	0	1	13	3	0	20	17	3	3 ( 4 Oct)	8	11	21 Feb	4 Nov
153.	White Wagtail	0	9	151	31	1	0	2	23	73	80	0	0	370	178	192	35 (20 Mar)	45	65	20 Feb	28 Oct
154.	alba wagtail sp.	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (18 Apr)	1	1	18 Apr	18 Apr
155.	Pied Wagtail	0	0	1	1	0	0	0	0	0	0	0	0	2	0	2	1 (22 Mar)	1	2	22 Mar	13 Apr
156.	Meadow Pipit	0	55	84	550	16	0	0	2	2069	6752	13	0	9541	8846	695	3297 ( 2 Oct)	54	77	6 Feb	22 Nov
157.	Tree Pipit	0	0	0	4	0	0	0	0	14	10	0	0	28	24	4	5 (18 Sep)	9	13	8 Apr	11 Oct
158.	Water Pipit	5	13	0	0	0	0	0	0	0	1	16	3	38	24	14	6 (18 Nov)	13	19	14 Jan	13 Dec
159.	Chaffinch	15	81	697	27	4	1	1	24	664	26126	1366	8	29014	28203	811	5198 ( 5 Oct)	67	96	14 Jan	13 Dec
160.	Brambling	0	0	1	0	0	0	0	0	2	6590	2852	0	9445	9444	1	4665 (29 Oct)	22	32	1 Mar	22 Nov
161.	Chaffinch/Brambling	0	0	0	0	0	0	0	0	0	5150	587	0	5737	5737	0	3494 (23 Oct)	8	11	23 Oct	18 Nov
162.	Hawfinch	0	1	1	0	0	0	0	0	0	6	0	0	8	6	2	2 (23 Oct)	4	6	18 Feb	28 Oct
163.	Bullfinch	0	0	0	0	0	0	0	0	1	2	1	0	4	4	0	2 (28 Oct)	2	3	17 Sep	14 Nov
164.	Greenfinch	1	17	21	7	0	0	0	0	26	45	12	8	137	92	45	10 (17 Sep)	30	43	16 Jan	13 Dec
165.	Linnet	0	3	33	50	0	0	6	0	96	252	0	0	440	354	86	102 (25 Oct)	27	38	21 Feb	28 Oct
166.	Lesser Redpoll	0	1	0	0	0	0	0	0	0	0	0	0	1	0	1	1 (23 Feb)	1	1	23 Feb	23 Feb
167.	redpoll sp.	0	1	0	0	0	0	0	0	0	4	2	0	7	6	1	2 (29 Oct)	3	4	23 Feb	15 Nov
168.	Crossbill	0	0	0	0	0	0	5	1	0	2	0	0	8	8	0	5 (31 Jul)	3	4	31 Jul	12 Oct
169.	Goldfinch	0	12	1	1	0	0	0	0	12	14	149	0	189	175	14	48 (18 Nov)	14	20	22 Feb	23 Nov
170.	Siskin	0	0	2	0	0	0	0	0	1	3562	262	0	3827	3785	42	1014 ( 5 Oct)	22	31	2 Mar	22 Nov
171.	Lapland Bunting	0	0	0	0	0	0	0	0	0	1	4	0	5	5	0	2 ( 2 Nov)	2	3	9 Oct	4 Nov
172.	Corn Bunting	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (22 Apr)	1	1	22 Apr	22 Apr
173.	Ortolan Bunting	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 ( 4 Sep)	1	1	4 Sep	4 Sep
174.	Reed Bunting	0	21	116	6	0	0	0	0	218	251	37	0	649	506	143	65 (27 Sep)	43	62	20 Feb	22 Nov
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Small Tortoiseshell	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (18 Sep)	1	1	18 Sep	18 Sep
2.	Brimstone	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (29 May)	1	1	29 May	29 May
3.	European Peacock	0	0	0	1	4	0	2	0	23	22	0	0	52	47	5	12 ( 9 Oct)	10	14	27 Apr	28 Oct
4.	Speckled Wood	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (20 Sep)	1	1	20 Sep	20 Sep
5.	Large White	0	0	0	0	0	0	1	4	0	0	0	0	5	5	0	4 (21 Aug)	1	2	12 Jul	21 Aug
6.	Small White	0	0	0	1	0	0	1	139	243	12	0	0	396	395	1	86 (21 Aug)	14	20	27 Apr	29 Oct
7.	Red Admiral	0	0	0	0	1	0	3	6	37	32	0	0	79	78	1	19 (14 Sep)	13	18	31 May	25 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	2914	27302	20529	18064	2075	3865	4082	8364	15597	108348	29612	259	241011	168982	72029		100	143
	Observation hours	14:30	48:29	79:31	66:34	13:56	11:30	17:30	37:15	72:45	95:23	47:00	2:30	506:53

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Trektellen

Totals Dordtse Biesbosch 2021