Totals Aetsveldsche polder, Nigtevecht 2021

Year
Period
count-field
Also present

	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	0	0	0	0	0	0	3	0	0	3	3	0	2 (13 Oct)	2	2	13 Oct	16 Oct
2.	Canada Goose	0	6	6	6	3	0	0	0	24	137	4	0	186	81	105	46 (17 Oct)	21	20	5 Feb	21 Nov
3.	Barnacle Goose	829	3979	2202	3345	3147	0	0	0	170	239	1076	201	15188	5242	9946	2016 (1 May)	62	59	8 Jan	21 Dec
4.	Branta leucopsis x ?	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (1 May)	1	1	1 May	1 May
5.	Lesser Canada Goose	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (26 Apr)	1	1	26 Apr	26 Apr
6.	Snow Goose	0	0	0	2	0	0	0	0	0	0	0	0	2	0	2	2 (27 Apr)	1	1	27 Apr	27 Apr
7.	Greylag Goose	155	716	381	221	1015	0	236	2243	1076	1635	309	59	8046	4927	3119	512 (20 Aug)	98	93	8 Jan	11 Dec
8.	goose sp.	1	17	0	0	0	0	0	0	0	13	249	10	290	272	18	249 (21 Nov)	5	5	31 Jan	10 Dec
9.	Domestic Goose	0	1	0	2	2	0	0	0	0	0	0	0	5	2	3	2 (27 Apr)	4	4	21 Feb	9 May
10.	Pink-footed Goose	5	2	0	0	0	0	0	0	0	0	61	0	68	61	7	50 (20 Nov)	5	5	9 Jan	20 Nov
11.	Tundra Bean Goose	12	106	0	0	0	0	0	0	4	22	134	17	295	149	146	94 (21 Nov)	14	13	9 Jan	11 Dec
12.	Eurasian White-fronted Goose	1104	21471	905	8	0	0	0	0	662	2708	2861	2068	31787	28100	3687	5717 (5 Feb)	52	49	8 Jan	21 Dec
13.	Mute Swan	14	38	14	40	128	0	0	20	36	36	23	20	369	210	159	33 (1 May)	62	59	8 Jan	11 Dec
14.	Bewick's Swan	13	64	0	0	0	0	0	0	0	0	0	2	79	16	63	49 (21 Feb)	4	4	9 Jan	21 Dec
15.	Whooper Swan	0	5	0	0	0	0	0	0	0	0	6	0	11	4	7	6 (24 Nov)	3	3	19 Feb	24 Nov
16.	Egyptian Goose	22	22	55	110	50	0	0	182	205	171	64	37	918	293	625	46 (7 Sep)	81	77	8 Jan	11 Dec
17.	Shelduck	4	17	23	73	44	0	0	0	4	0	0	0	165	46	119	14 (21 Apr)	38	36	9 Jan	21 Sep
18.	Shoveler	0	1	0	0	0	0	0	0	11	0	0	0	12	12	0	10 (26 Sep)	3	3	20 Feb	26 Sep
19.	Gadwall	96	56	25	13	9	0	4	201	264	120	4	0	792	650	142	53 (9 Jan)	63	60	9 Jan	21 Nov
20.	Wigeon	298	2328	202	0	0	0	0	4	27	164	256	8	3287	898	2389	1245 (20 Feb)	24	23	9 Jan	10 Dec
21.	Mallard	2	5	10	25	4	0	6	18	58	61	6	4	199	143	56	39 (22 Sep)	46	44	8 Jan	10 Dec
22.	Pintail	0	4	13	2	3	0	0	4	0	2	61	0	89	72	17	60 (21 Nov)	12	11	5 Feb	21 Nov
23.	Teal	0	0	2	0	0	0	0	0	4	2	1	0	9	6	3	4 (26 Sep)	6	6	24 Mar	11 Nov
24.	dabbling duck sp.	0	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (24 Mar)	1	1	24 Mar	24 Mar
25.	duck sp.	0	0	0	25	0	0	0	17	3	34	0	0	79	79	0	34 (13 Oct)	4	4	15 Apr	13 Oct
26.	Pochard	0	1	0	0	0	0	0	0	0	6	0	4	11	6	5	6 (9 Oct)	3	3	6 Feb	11 Dec
27.	Tufted Duck	0	0	0	3	7	0	0	1	0	0	0	0	11	2	9	4 (11 May)	5	5	14 Apr	12 Aug
28.	Goldeneye	0	0	0	0	0	0	0	0	0	11	0	0	11	11	0	11 (8 Oct)	1	1	8 Oct	8 Oct
29.	Goosander	0	0	5	0	0	0	0	0	0	0	0	0	5	0	5	2 (19 Mar)	3	3	19 Mar	31 Mar
30.	Swift	0	0	0	90	119	0	59	114	3	0	0	0	385	189	196	77 (4 Aug)	26	25	23 Apr	5 Sep
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Cuckoo	0	0	0	0	3	0	0	1	0	0	0	0	4	2	2	2 (9 May)	3	3	1 May	4 Aug
32.	Feral Pigeon	1	0	59	204	47	0	2	213	67	0	0	0	593	134	459	194 (24 Apr)	22	21	8 Jan	22 Sep
33.	Stock Dove	11	54	15	8	11	0	0	27	15	48	14	3	206	138	68	17 (21 Feb)	62	59	8 Jan	11 Dec
34.	Woodpigeon	175	1581	1518	663	187	0	11	39	83	1593	21	3	5874	2838	3036	457 (21 Feb)	94	89	8 Jan	11 Dec
35.	Collared Dove	0	1	2	16	11	0	0	1	2	1	2	0	36	21	15	5 (24 Apr)	22	21	18 Feb	10 Nov
36.	Coot	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (14 Aug)	1	1	14 Aug	14 Aug
37.	Crane	0	1	0	0	0	0	0	0	0	0	0	0	1	0	1	1 (21 Feb)	1	1	21 Feb	21 Feb
38.	Great Crested Grebe	0	0	0	1	1	0	0	1	1	0	0	0	4	2	2	1 (8 Apr)	4	4	8 Apr	26 Sep
39.	Oystercatcher	0	38	27	11	29	0	0	5	0	0	0	0	110	26	84	22 (21 Feb)	33	31	18 Feb	31 Aug
40.	Avocet	0	0	2	0	0	0	0	0	0	0	0	0	2	2	0	2 (30 Mar)	1	1	30 Mar	30 Mar
41.	Grey Plover	0	0	4	0	0	0	0	1	0	0	0	0	5	1	4	4 (20 Mar)	2	2	20 Mar	20 Aug
42.	Golden Plover	4	743	61	4	0	0	0	589	152	180	0	0	1733	989	744	339 (21 Feb)	48	46	9 Jan	31 Oct
43.	Dotterel	0	0	0	0	0	0	0	1	1	0	0	0	2	2	0	1 (14 Aug)	2	2	14 Aug	5 Sep
44.	Ringed Plover	0	0	0	0	0	0	0	0	10	1	0	0	11	11	0	10 (5 Sep)	2	2	5 Sep	9 Oct
45.	Little Ringed Plover	0	0	4	4	0	0	0	0	0	0	0	0	8	3	5	2 (25 Mar)	6	6	23 Mar	15 Apr
46.	Lapwing	459	5978	78	22	33	0	239	1243	491	1847	528	298	11216	5878	5338	2510 (20 Feb)	80	76	8 Jan	11 Dec
47.	Whimbrel	0	0	2	407	117	0	0	9	31	0	0	0	566	49	517	129 (27 Apr)	20	19	30 Mar	2 Sep
48.	Curlew	2	13	1	20	3	0	12	27	44	1	2	1	126	74	52	18 (7 Sep)	35	33	9 Jan	11 Dec
49.	Bar-tailed Godwit	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (27 Apr)	1	1	27 Apr	27 Apr
50.	Black-tailed Godwit	0	0	161	15	2	0	0	0	0	0	0	0	178	20	158	39 (20 Mar)	16	15	10 Mar	15 May
51.	Jack Snipe	0	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (31 Mar)	1	1	31 Mar	31 Mar
52.	Snipe	2	0	3	2	1	0	0	153	95	140	0	0	396	380	16	64 (24 Aug)	39	37	8 Jan	31 Oct
53.	Common Sandpiper	0	0	0	0	4	0	0	2	0	0	0	0	6	2	4	2 (9 May)	5	5	2 May	27 Aug
54.	Green Sandpiper	1	0	1	19	1	0	0	17	1	9	1	0	50	28	22	6 (4 Aug)	22	21	9 Jan	12 Nov
55.	Wood Sandpiper	0	0	0	13	10	0	0	0	0	0	0	0	23	1	22	9 (28 Apr)	5	5	23 Apr	9 May
56.	Redshank	0	0	9	16	0	0	0	0	0	0	0	0	25	1	24	11 (28 Apr)	9	9	10 Mar	28 Apr
57.	Greenshank	0	0	0	4	1	0	0	0	0	0	0	0	5	0	5	4 (26 Apr)	2	2	26 Apr	9 May
58.	Ruff	0	0	55	39	0	0	0	0	0	5	0	0	99	5	94	24 (24 Mar)	12	11	20 Mar	17 Oct
59.	wader sp.	0	2	0	0	14	0	0	0	0	0	0	0	16	0	16	11 (2 May)	3	3	20 Feb	6 May
60.	Dunlin	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (31 Aug)	1	1	31 Aug	31 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Black Tern	0	0	0	64	87	0	0	0	0	0	0	0	151	49	102	64 (28 Apr)	5	5	28 Apr	9 May
62.	Common Tern	0	0	0	6	23	0	0	1	0	0	0	0	30	6	24	11 (9 May)	6	6	26 Apr	12 Aug
63.	Little Gull	0	0	0	78	0	0	0	0	0	0	0	0	78	0	78	68 (26 Apr)	2	2	24 Apr	26 Apr
64.	Black-headed Gull	13	548	587	305	328	0	25	1304	463	1207	31	21	4832	3009	1823	440 (27 Aug)	88	84	8 Jan	11 Dec
65.	Mediterranean Gull	0	2	23	70	13	0	0	0	0	0	0	0	108	51	57	13 (26 Apr)	21	20	24 Feb	9 May
66.	Common Gull	22	11	16	40	19	0	3	38	27	125	8	6	315	211	104	39 (13 Oct)	66	63	8 Jan	11 Dec
67.	Caspian Gull	0	1	0	4	4	0	0	0	2	1	0	0	12	2	10	2 (1 May)	12	11	19 Feb	2 Oct
68.	Herring Gull	14	23	11	11	2	0	1	8	6	6	16	3	101	61	40	10 (5 Feb)	42	40	8 Jan	11 Dec
69.	Great Black-backed Gull	3	10	1	2	0	0	0	1	1	1	3	0	22	10	12	5 (19 Feb)	18	17	9 Jan	24 Nov
70.	Lesser Black-backed Gull	2	4	27	116	69	0	1	263	89	50	1	0	622	443	179	83 (21 Aug)	66	63	9 Jan	14 Nov
71.	large gull sp.	0	0	0	3	3	0	0	0	0	0	0	0	6	0	6	3 (18 Apr)	3	3	18 Apr	6 May
72.	White Stork	0	7	6	6	5	0	0	49	3	45	0	0	121	96	25	18 (14 Aug)	27	26	5 Feb	16 Oct
73.	Cormorant	39	279	562	454	126	0	8	309	921	1346	31	11	4086	2614	1472	573 (13 Oct)	95	90	8 Jan	21 Dec
74.	Spoonbill	0	1	12	77	19	0	1	21	99	0	0	0	230	125	105	64 (26 Sep)	32	30	27 Feb	26 Sep
75.	Little Egret	0	0	0	0	0	0	0	3	0	0	0	0	3	3	0	3 (24 Aug)	1	1	24 Aug	24 Aug
76.	Cattle Egret	0	0	0	4	0	0	0	0	0	0	0	0	4	0	4	4 (24 Apr)	1	1	24 Apr	24 Apr
77.	Great White Egret	1	15	14	36	16	0	0	29	23	27	4	2	167	87	80	12 (8 Oct)	68	65	31 Jan	21 Dec
78.	heron sp.	0	0	0	0	8	0	0	0	0	0	0	0	8	0	8	8 (8 May)	1	1	8 May	8 May
79.	Grey Heron	1	5	18	29	14	0	0	14	21	17	0	0	119	55	64	13 (26 Sep)	43	41	31 Jan	17 Oct
80.	Purple Heron	0	0	0	6	18	0	4	29	18	3	0	0	78	41	37	8 (18 Aug)	35	33	20 Apr	9 Oct
81.	Osprey	0	0	0	1	1	0	0	0	0	0	0	0	2	1	1	1 (24 Apr)	2	2	24 Apr	13 May
82.	Honey Buzzard	0	0	0	0	1	0	0	3	0	1	0	0	5	4	1	1 (9 May)	5	5	9 May	2 Oct
83.	Sparrowhawk	1	18	12	20	7	0	0	30	11	30	5	0	134	79	55	11 (21 Feb)	48	46	9 Jan	21 Nov
84.	Goshawk	0	4	6	3	2	0	0	3	1	3	2	0	24	9	15	2 (20 Feb)	21	20	20 Feb	24 Nov
85.	Marsh Harrier	0	2	6	20	24	0	0	56	12	24	0	0	144	93	51	16 (9 May)	41	39	19 Feb	31 Oct
86.	Hen Harrier	0	2	0	2	0	0	0	0	0	7	1	0	12	8	4	4 (9 Oct)	8	8	19 Feb	12 Nov
87.	Red Kite	0	0	0	1	1	0	0	0	0	1	0	0	3	1	2	1 (27 Apr)	3	3	27 Apr	31 Oct
88.	Black Kite	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (9 May)	1	1	9 May	9 May
89.	White-tailed Eagle	1	5	0	0	0	0	0	0	0	0	0	0	6	1	5	5 (21 Feb)	2	2	8 Jan	21 Feb
90.	Common Buzzard	2	36	29	20	15	0	0	33	10	71	1	0	217	115	102	32 (21 Feb)	39	37	8 Jan	20 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	raptor sp.	0	0	0	0	0	0	0	2	0	0	0	0	2	2	0	2 (21 Aug)	1	1	21 Aug	21 Aug
92.	Lesser Spotted Woodpecker	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (27 Aug)	1	1	27 Aug	27 Aug
93.	Great Spotted Woodpecker	1	1	4	5	0	0	0	3	6	8	0	0	28	15	13	5 (2 Oct)	23	22	9 Jan	16 Oct
94.	Green Woodpecker	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (9 Oct)	1	1	9 Oct	9 Oct
95.	Kestrel	0	0	0	2	0	0	0	2	5	3	0	0	12	10	2	2 (14 Aug)	9	9	24 Apr	11 Oct
96.	falcon sp.	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (9 May)	1	1	9 May	9 May
97.	Red-footed Falcon	0	0	0	0	1	0	0	0	0	0	0	0	1	1	0	1 (9 May)	1	1	9 May	9 May
98.	Merlin	0	0	0	2	2	0	0	1	0	1	0	0	6	2	4	1 (18 Apr)	6	6	18 Apr	2 Oct
99.	Hobby	0	0	0	6	4	0	0	5	2	1	0	0	18	8	10	2 (20 Apr)	15	14	20 Apr	2 Oct
100.	Peregrine	1	5	1	1	1	0	0	2	0	3	0	1	15	6	9	4 (21 Feb)	11	10	9 Jan	11 Dec
101.	Alexandrine Parakeet	0	0	0	0	0	0	0	0	25	44	0	0	69	48	21	39 (4 Oct)	5	5	1 Sep	4 Oct
102.	Rose-ringed Parakeet	22	51	28	55	23	0	17	174	281	183	155	1	990	948	42	76 (16 Oct)	77	73	8 Jan	11 Dec
103.	Jay	0	0	1	2	5	0	0	0	60	64	0	0	132	119	13	26 (2 Oct)	18	17	30 Mar	16 Oct
104.	Magpie	0	0	7	6	1	0	0	0	1	4	0	0	19	5	14	5 (8 Apr)	11	10	19 Mar	31 Oct
105.	Jackdaw	9	177	274	115	100	0	92	964	2228	1253	61	0	5273	4781	492	550 (2 Sep)	92	87	8 Jan	24 Nov
106.	Rook	1	6	1	6	7	0	4	7	6	8	3	4	53	26	27	5 (15 May)	27	26	9 Jan	21 Dec
107.	Carrion Crow	1	0	12	1	5	0	0	4	10	0	0	89	122	102	20	89 (21 Dec)	16	15	8 Jan	21 Dec
108.	Raven	3	2	2	2	3	0	0	26	7	10	3	0	58	36	22	11 (25 Aug)	23	22	9 Jan	21 Nov
109.	Blue Tit	1	12	3	3	0	0	1	7	12	25	41	0	105	88	17	38 (10 Nov)	24	23	9 Jan	21 Nov
110.	Great Tit	2	2	3	4	0	0	0	2	7	4	2	1	27	20	7	3 (7 Sep)	18	17	8 Jan	11 Dec
111.	Wood Lark	0	1	1	0	0	0	0	0	0	2	0	0	4	2	2	1 (21 Feb)	4	4	21 Feb	13 Oct
112.	Skylark	16	270	4	0	0	0	0	0	2	2351	30	0	2673	2403	270	963 (16 Oct)	23	22	9 Jan	14 Nov
113.	Sand Martin	0	0	0	64	33	0	31	10	0	0	0	0	138	58	80	31 (30 Jul)	21	20	10 Apr	20 Aug
114.	Swallow	0	0	3	92	136	0	120	1578	634	468	0	0	3031	2774	257	452 (20 Aug)	56	53	30 Mar	31 Oct
115.	House Martin	0	0	0	7	19	0	7	110	13	1	0	0	157	139	18	34 (20 Aug)	25	24	23 Apr	2 Oct
116.	Long-tailed Tit	5	0	0	0	1	0	0	0	0	2	0	0	8	2	6	5 (9 Jan)	3	3	9 Jan	17 Oct
117.	Willow Warbler	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (14 Aug)	1	1	14 Aug	14 Aug
118.	Chiffchaff	0	0	0	1	0	0	0	10	7	2	1	0	21	20	1	4 (4 Aug)	16	15	21 Apr	10 Nov
119.	Chiffchaff/Willow Warbler	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (10 Sep)	1	1	10 Sep	10 Sep
120.	Reed Warbler	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (18 Aug)	1	1	18 Aug	18 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Blackcap	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (21 Aug)	1	1	21 Aug	21 Aug
122.	Garden Warbler	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (6 Sep)	1	1	6 Sep	6 Sep
123.	Whitethroat	0	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (28 Apr)	1	1	28 Apr	28 Apr
124.	Starling	185	5572	4366	136	28	0	37	4922	8091	21642	7527	139	52645	45676	6969	5391 (16 Oct)	93	88	8 Jan	21 Dec
125.	Song Thrush	0	1	6	23	0	0	0	0	8	48	2	0	88	58	30	17 (20 Apr)	21	20	18 Feb	11 Nov
126.	Mistle Thrush	0	0	0	3	0	0	0	0	0	2	1	0	6	4	2	1 (18 Apr)	6	6	18 Apr	11 Nov
127.	Redwing	0	33	93	4	0	0	0	0	0	458	212	0	800	751	49	281 (13 Oct)	21	20	5 Feb	14 Nov
128.	Blackbird	0	0	1	0	0	0	0	0	0	1	4	1	7	6	1	3 (11 Nov)	5	5	19 Mar	21 Dec
129.	Fieldfare	128	232	152	143	49	0	0	0	0	1	16	0	721	204	517	135 (21 Feb)	32	30	8 Jan	20 Nov
130.	Ring Ouzel	0	0	0	18	0	0	0	0	0	0	0	0	18	0	18	9 (10 Apr)	4	4	10 Apr	28 Apr
131.	Spotted Flycatcher	0	0	0	0	1	0	0	2	0	0	0	0	3	2	1	1 (13 May)	3	3	13 May	18 Aug
132.	White-spotted Bluethroat	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (31 Aug)	1	1	31 Aug	31 Aug
133.	Whinchat	0	0	0	0	1	0	0	11	4	0	0	0	16	15	1	4 (24 Aug)	11	10	1 May	14 Sep
134.	Stonechat	0	0	1	0	0	0	0	0	0	0	0	0	1	0	1	1 (19 Mar)	1	1	19 Mar	19 Mar
135.	Wheatear	0	0	0	0	1	0	0	2	4	0	0	0	7	6	1	2 (31 Aug)	5	5	8 May	13 Sep
136.	Tree Sparrow	0	2	4	2	0	0	0	6	14	20	10	0	58	47	11	10 (26 Sep)	19	18	18 Feb	14 Nov
137.	House Sparrow	0	2	6	0	0	0	0	100	0	1	0	0	109	54	55	45 (14 Aug)	9	9	5 Feb	8 Oct
138.	Dunnock	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (8 Oct)	1	1	8 Oct	8 Oct
139.	Blue-headed Wagtail	0	0	1	50	36	0	4	165	153	5	0	0	414	325	89	62 (21 Aug)	49	47	31 Mar	9 Oct
140.	Yellow Wagtail (flavissima)	0	0	0	1	0	0	0	1	0	0	0	0	2	1	1	1 (20 Apr)	2	2	20 Apr	21 Aug
141.	Grey-headed Wagtail	0	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (15 May)	1	1	15 May	15 May
142.	Grey Wagtail	1	2	7	0	0	0	0	0	1	13	3	0	27	22	5	6 (16 Oct)	17	16	31 Jan	20 Nov
143.	White Wagtail	2	29	38	31	20	0	7	34	68	88	8	1	326	221	105	19 (22 Sep)	79	75	9 Jan	11 Dec
144.	Pied Wagtail	0	2	1	0	0	0	0	0	0	0	0	0	3	0	3	1 (20 Feb)	3	3	20 Feb	10 Mar
145.	Meadow Pipit	1	80	47	1065	46	0	0	2	2004	7445	11	1	10702	9477	1225	6123 (2 Oct)	64	61	9 Jan	11 Dec
146.	Tree Pipit	0	0	0	3	2	0	0	1	2	0	0	0	8	3	5	1 (13 Apr)	8	8	13 Apr	21 Sep
147.	Water Pipit	0	3	0	4	0	0	0	0	1	0	1	0	9	3	6	2 (19 Feb)	7	7	19 Feb	20 Nov
148.	Chaffinch	3	126	79	10	0	0	0	2	157	7790	97	1	8265	8117	148	5335 (16 Oct)	58	55	9 Jan	11 Dec
149.	Brambling	0	0	0	2	0	0	0	0	1	211	57	0	271	269	2	76 (13 Oct)	13	12	20 Apr	11 Nov
150.	Chaffinch/Brambling	0	0	0	0	0	0	0	0	0	13	105	0	118	118	0	90 (11 Nov)	3	3	31 Oct	11 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Hawfinch	0	1	0	0	2	0	0	0	0	0	0	0	3	3	0	2 (9 May)	2	2	20 Feb	9 May
152.	Bullfinch	0	0	0	0	1	0	0	0	0	2	0	0	3	2	1	2 (13 Oct)	2	2	6 May	13 Oct
153.	Greenfinch	0	35	2	4	4	0	0	34	33	33	3	0	148	124	24	18 (14 Sep)	40	38	5 Feb	20 Nov
154.	Linnet	0	5	11	36	3	0	2	7	21	102	2	0	189	141	48	32 (9 Oct)	41	39	18 Feb	12 Nov
155.	Crossbill	0	0	0	0	11	0	1	0	1	6	0	0	19	8	11	11 (7 May)	5	5	7 May	31 Oct
156.	Goldfinch	1	6	6	37	16	0	3	37	23	21	0	3	153	77	76	12 (12 Aug)	55	52	9 Jan	10 Dec
157.	Siskin	0	2	6	1	1	0	0	0	2	510	11	0	533	522	11	257 (16 Oct)	23	22	21 Feb	21 Nov
158.	Ortolan Bunting	0	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (5 Sep)	1	1	5 Sep	5 Sep
159.	Reed Bunting	1	6	8	5	1	0	0	3	18	86	0	0	128	112	16	22 (9 Oct)	37	35	9 Jan	31 Oct
160.	Species unidentified	0	0	1	1	1	0	0	0	1	1	0	0	5	2	3	1 (23 Mar)	5	5	23 Mar	16 Oct
	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	1	2	0	0	0	0	5	0	2	0	0	10	7	3	4 (4 Aug)	6	6	21 Feb	9 Oct
2.	European Peacock	0	0	0	0	0	0	0	1	2	6	0	0	9	8	1	4 (7 Oct)	4	4	4 Aug	8 Oct
3.	Speckled Wood	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (21 Aug)	1	1	21 Aug	21 Aug
4.	Large White	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (4 Aug)	1	1	4 Aug	4 Aug
5.	Green-veined White	0	0	0	0	0	0	0	0	0	2	0	0	2	2	0	1 (2 Oct)	2	2	2 Oct	9 Oct
6.	Small White	0	0	0	0	2	0	0	1	0	1	0	0	4	2	2	2 (9 May)	3	3	9 May	9 Oct
7.	Red Admiral	0	0	0	0	3	0	0	7	2	6	0	0	18	14	4	3 (4 Aug)	8	8	9 May	9 Oct
8.	Painted Lady	0	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (4 Aug)	1	1	4 Aug	4 Aug
	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.	Darter unknown	0	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (2 Oct)	1	1	2 Oct	2 Oct
2.	Migrant Hawker	0	0	0	0	0	0	0	2	0	0	0	0	2	2	0	1 (4 Aug)	2	2	4 Aug	31 Aug
	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.	Bumblebee sp.	0	0	0	1	4	0	0	0	0	0	0	0	5	1	4	1 (24 Apr)	5	5	24 Apr	9 May
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	3693	44890	12360	8769	6389	0	938	15589	19171	55110	14152	3020	184081	137292	46789		100	95
	Observation hours	10:05	36:33	32:33	47:49	39:44	0:00	4:08	39:30	33:40	49:40	12:23	5:12	311:17

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Totals Aetsveldsche polder, Nigtevecht 2021