Totals Aetsveldsche polder, Nigtevecht 2025

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	9	0	11	4	43	26	18	47	165	2	20	345	201	144	119 ( 6 Sep)	25	21	2 Jan	29 Nov
2.	Barnacle Goose	2107	1531	1909	182	169	1	0	0	6	172	235	6312	4001	2311	1250 (20 Mar)	51	43	2 Jan	29 Nov
3.	Lesser Canada Goose	0	0	0	0	1	0	0	0	0	2	0	3	3	0	2 (19 Oct)	2	2	29 May	19 Oct
4.	Greylag Goose	238	304	384	333	1505	287	906	1568	1981	1766	662	9934	6722	3212	832 (10 Sep)	98	83	2 Jan	29 Nov
5.	goose sp.	0	286	0	0	12	0	0	13	0	131	125	567	421	146	151 (14 Feb)	13	11	14 Feb	6 Nov
6.	Domestic Goose	0	0	0	1	2	0	0	0	5	1	0	9	6	3	2 (10 Sep)	8	7	3 Apr	12 Oct
7.	Feral Mallard	0	0	1	0	0	0	1	2	1	5	0	10	9	1	3 (17 Oct)	7	6	10 Mar	17 Oct
8.	Pink-footed Goose	4	0	1	0	0	0	0	0	3	4	29	41	36	5	29 ( 6 Nov)	6	5	2 Jan	6 Nov
9.	Tundra Bean Goose	70	21	0	0	0	0	0	0	0	10	201	302	302	0	171 ( 6 Nov)	12	10	2 Jan	8 Nov
10.	Eurasian White-fronted Goose	7208	10888	2540	14	0	0	0	0	0	4528	14916	40094	34284	5810	6303 (29 Nov)	40	34	2 Jan	29 Nov
11.	Mute Swan	15	22	9	19	97	9	16	11	68	16	47	329	171	158	65 ( 3 May)	64	54	2 Jan	29 Nov
12.	Whooper Swan	0	3	0	0	0	0	0	0	0	0	0	3	0	3	3 (25 Feb)	1	1	25 Feb	25 Feb
13.	Egyptian Goose	12	54	108	174	58	18	63	75	164	302	59	1087	572	515	91 (12 Oct)	84	71	2 Jan	29 Nov
14.	Shelduck	0	9	15	57	11	0	0	0	2	4	6	104	39	65	18 ( 7 Apr)	35	30	6 Feb	29 Nov
15.	Ruddy Shelduck	0	0	0	0	0	4	0	0	0	0	0	4	4	0	4 (21 Jun)	1	1	21 Jun	21 Jun
16.	Shoveler	0	0	6	2	1	0	0	0	0	10	2	21	13	8	10 (19 Oct)	7	6	19 Mar	8 Nov
17.	Gadwall	4	87	37	28	22	24	96	56	58	38	21	471	244	227	59 (21 Feb)	65	55	26 Jan	29 Nov
18.	Wigeon	370	301	6338	77	0	0	0	0	4	874	218	8182	991	7191	4854 ( 8 Mar)	28	24	26 Jan	29 Nov
19.	Mallard	3	7	16	29	7	11	7	7	19	91	35	232	173	59	17 (22 Oct)	64	54	2 Jan	29 Nov
20.	Pintail	0	0	11	3	0	0	0	0	0	10	0	24	10	14	11 (22 Mar)	6	5	22 Mar	17 Oct
21.	Teal	0	0	0	0	0	0	0	0	0	14	1	15	15	0	6 ( 3 Oct)	7	6	2 Oct	6 Nov
22.	duck sp.	0	0	0	0	0	0	34	480	3243	39	69	3865	3862	3	3183 ( 7 Sep)	14	12	13 Jul	29 Nov
23.	Garganey/Teal	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 ( 8 Mar)	1	1	8 Mar	8 Mar
24.	Red-crested Pochard	0	0	0	1	0	0	1	0	0	0	0	2	1	1	1 ( 7 Apr)	2	2	7 Apr	20 Jul
25.	Pochard	0	0	0	0	0	0	5	0	14	0	0	19	19	0	14 ( 7 Sep)	2	2	1 Jul	7 Sep
26.	Tufted Duck	0	1	0	9	12	7	1	0	0	0	0	30	23	7	6 (21 Jun)	14	12	21 Feb	30 Jul
27.	Goosander	1	0	1	0	0	0	0	0	0	3	0	5	2	3	3 (15 Oct)	4	3	2 Jan	15 Oct
28.	Red-breasted Merganser	0	2	0	0	0	0	0	0	0	0	0	2	0	2	2 (21 Feb)	1	1	21 Feb	21 Feb
29.	Swift	0	0	0	13	83	34	182	3	0	0	0	315	210	105	81 (20 Jul)	28	24	12 Apr	6 Aug
30.	Cuckoo	0	0	0	0	0	5	0	1	0	0	0	6	6	0	4 (21 Jun)	4	3	21 Jun	19 Aug
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
31.	Feral Pigeon	19	1	30	35	45	24	288	12	35	0	1	490	158	332	155 (19 Jul)	33	28	26 Jan	6 Nov
32.	Stock Dove	10	17	14	27	8	16	27	6	16	138	64	343	284	59	50 (17 Oct)	71	60	2 Jan	29 Nov
33.	Woodpigeon	180	161	388	117	26	10	12	25	25	1487	847	3278	2640	638	608 ( 6 Nov)	87	74	2 Jan	29 Nov
34.	Collared Dove	0	0	0	0	2	1	4	0	4	0	0	11	10	1	4 (30 Jul)	6	5	12 May	20 Sep
35.	Coot	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 ( 3 May)	1	1	3 May	3 May
36.	Crane	0	0	0	0	0	0	0	3	0	0	0	3	3	0	3 ( 6 Aug)	1	1	6 Aug	6 Aug
37.	Great Crested Grebe	0	0	0	0	3	0	1	1	0	0	0	5	2	3	2 ( 3 May)	5	4	3 May	27 Aug
38.	Oystercatcher	1	13	31	23	16	21	18	0	0	0	0	123	68	55	11 (24 Jun)	40	34	26 Jan	24 Jul
39.	Golden Plover	39	447	184	30	0	0	9	380	506	194	46	1835	1225	610	359 (21 Feb)	52	44	26 Jan	6 Nov
40.	Dotterel	0	0	0	0	0	0	0	0	3	0	0	3	3	0	3 ( 6 Sep)	1	1	6 Sep	6 Sep
41.	Ringed Plover	0	0	0	1	0	0	0	1	3	0	0	5	4	1	2 ( 7 Sep)	5	4	4 Apr	19 Sep
42.	Little Ringed Plover	0	0	2	0	0	0	0	0	0	0	0	2	2	0	2 (20 Mar)	1	1	20 Mar	20 Mar
43.	Lapwing	275	2246	173	31	22	166	764	767	703	1846	1732	8725	6355	2370	2037 (21 Feb)	81	69	2 Jan	29 Nov
44.	Whimbrel	0	0	0	124	4	37	7	3	0	0	0	175	65	110	38 ( 5 Apr)	20	17	4 Apr	27 Aug
45.	Curlew	0	5	7	3	1	4	22	2	5	3	1	53	37	16	7 ( 1 Jul)	27	23	21 Feb	29 Nov
46.	Bar-tailed Godwit	0	0	0	0	2	0	0	0	0	0	0	2	0	2	2 (31 May)	1	1	31 May	31 May
47.	Black-tailed Godwit	0	4	92	77	5	4	0	0	0	0	0	182	25	157	34 (21 Mar)	22	19	21 Feb	21 Jun
48.	Jack Snipe	0	0	0	0	0	0	0	1	0	1	0	2	2	0	1 (26 Aug)	2	2	26 Aug	19 Oct
49.	Snipe	0	9	25	1	0	0	18	90	146	93	9	391	356	35	62 ( 7 Sep)	41	35	21 Feb	29 Nov
50.	Common Sandpiper	0	0	0	0	1	0	1	3	0	0	0	5	4	1	1 ( 3 May)	6	5	3 May	29 Aug
51.	Green Sandpiper	0	2	6	66	0	2	5	0	0	10	2	93	20	73	32 ( 7 Apr)	26	22	21 Feb	8 Nov
52.	Wood Sandpiper	0	0	0	0	6	0	0	0	0	0	0	6	0	6	6 ( 3 May)	1	1	3 May	3 May
53.	Redshank	0	0	24	15	5	13	12	1	0	0	0	70	23	47	12 ( 1 Jul)	22	19	8 Mar	26 Aug
54.	Greenshank	0	0	0	1	0	0	1	1	0	0	0	3	2	1	1 (15 Apr)	4	3	15 Apr	26 Aug
55.	Ruff	0	0	7	4	0	0	0	15	23	0	0	49	38	11	23 (20 Sep)	7	6	8 Mar	20 Sep
56.	wader sp.	0	0	3	2	12	0	0	0	1	0	0	18	0	18	12 ( 3 May)	5	4	8 Mar	19 Sep
57.	Caspian Tern	0	0	0	0	0	0	0	0	3	0	0	3	3	0	3 (19 Sep)	1	1	19 Sep	19 Sep
58.	Black Tern	0	0	0	14	0	0	0	0	0	0	0	14	14	0	14 (15 Apr)	1	1	15 Apr	15 Apr
59.	Common Tern	0	0	0	0	2	8	22	0	2	0	0	34	20	14	5 ( 4 Jul)	20	17	11 May	10 Sep
60.	Little Gull	0	0	0	1	0	0	0	0	0	0	0	1	1	0	1 (15 Apr)	1	1	15 Apr	15 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
61.	Black-headed Gull	16	202	414	243	36	29	310	323	300	451	190	2514	1700	814	169 (21 Feb)	93	79	2 Jan	29 Nov
62.	Mediterranean Gull	0	2	6	32	0	7	1	0	0	0	0	48	29	19	10 (12 Apr)	15	13	21 Feb	19 Jul
63.	Common Gull	64	58	149	20	1	3	5	31	25	71	143	570	385	185	58 ( 5 Nov)	65	55	2 Jan	29 Nov
64.	Caspian Gull	6	12	16	5	4	5	8	6	3	5	3	73	54	19	8 ( 8 Mar)	48	41	2 Jan	8 Nov
65.	Herring Gull	6	4	4	4	4	6	6	5	4	19	11	73	58	15	5 (10 Oct)	44	37	26 Jan	29 Nov
66.	Great Black-backed Gull	3	3	1	0	0	0	0	0	2	2	2	13	8	5	2 (31 Jan)	14	12	26 Jan	8 Nov
67.	Lesser Black-backed Gull	0	5	101	156	45	57	56	98	74	16	0	608	299	309	44 ( 7 Apr)	74	63	21 Feb	22 Oct
68.	Black Stork	0	0	0	0	0	0	2	0	0	0	0	2	2	0	2 (18 Jul)	1	1	18 Jul	18 Jul
69.	White Stork	0	11	11	16	6	7	21	36	69	27	1	205	156	49	36 ( 7 Sep)	45	38	21 Feb	6 Nov
70.	Cormorant	16	87	785	477	61	24	73	91	691	517	146	2968	1541	1427	443 ( 7 Sep)	93	79	2 Jan	29 Nov
71.	Spoonbill	0	3	11	46	18	6	22	9	101	38	0	254	171	83	52 (19 Sep)	45	38	21 Feb	12 Oct
72.	Little Egret	0	0	0	2	0	0	0	1	0	0	0	3	1	2	2 ( 4 Apr)	2	2	4 Apr	28 Aug
73.	Cattle Egret	0	0	0	0	0	0	1	1	0	0	0	2	1	1	1 (26 Jul)	2	2	26 Jul	6 Aug
74.	Great White Egret	0	4	17	21	15	2	22	19	48	40	53	241	178	63	41 ( 6 Nov)	64	54	6 Feb	8 Nov
75.	Grey Heron	0	2	23	44	4	7	11	10	18	12	5	136	57	79	33 ( 4 Apr)	45	38	25 Feb	8 Nov
76.	Purple Heron	0	0	0	13	9	5	8	9	5	0	0	49	25	24	4 (12 Apr)	25	21	5 Apr	10 Sep
77.	Osprey	0	0	0	0	0	0	0	3	5	0	0	8	6	2	2 (24 Aug)	7	6	24 Aug	20 Sep
78.	Honey Buzzard	0	0	0	0	2	1	3	2	5	0	0	13	9	4	3 ( 7 Sep)	9	8	11 May	7 Sep
79.	Sparrowhawk	1	4	25	26	4	0	4	11	28	24	12	139	79	60	14 ( 7 Sep)	49	42	26 Jan	29 Nov
80.	Goshawk	0	1	2	1	0	0	0	1	3	1	3	12	8	4	2 (19 Sep)	12	10	21 Feb	6 Nov
81.	Marsh Harrier	0	0	16	30	10	3	13	35	89	8	3	207	151	56	44 ( 7 Sep)	51	43	19 Mar	8 Nov
82.	Hen Harrier	0	1	1	0	1	0	0	0	1	1	1	6	4	2	1 (14 Feb)	7	6	14 Feb	8 Nov
83.	Pallid Harrier	0	0	0	1	0	0	0	0	0	1	0	2	1	1	1 ( 7 Apr)	2	2	7 Apr	19 Oct
84.	Red Kite	0	0	0	0	0	0	0	2	0	1	0	3	3	0	2 ( 9 Aug)	2	2	9 Aug	1 Oct
85.	Black Kite	0	0	0	1	2	1	0	0	0	0	0	4	0	4	1 ( 4 Apr)	5	4	4 Apr	20 Jun
86.	White-tailed Eagle	1	2	7	5	2	0	3	2	11	3	0	36	23	13	7 ( 7 Sep)	24	20	2 Jan	19 Oct
87.	Common Buzzard	1	2	22	14	4	0	5	35	56	82	5	226	182	44	28 (10 Oct)	38	32	2 Jan	8 Nov
88.	Kingfisher	0	0	1	0	0	1	1	0	1	0	0	4	3	1	1 (20 Mar)	5	4	20 Mar	7 Sep
89.	European Bee-eater	0	0	0	0	1	0	0	0	0	0	0	1	0	1	1 (11 May)	1	1	11 May	11 May
90.	Great Spotted Woodpecker	0	1	2	1	0	2	7	4	6	6	0	29	18	11	2 (22 Mar)	22	19	21 Feb	22 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
91.	Black Woodpecker	0	0	0	0	0	0	0	1	0	1	0	2	2	0	1 (26 Aug)	2	2	26 Aug	15 Oct
92.	Green Woodpecker	0	0	1	1	0	0	1	2	1	0	0	6	4	2	1 (21 Mar)	7	6	21 Mar	6 Sep
93.	Kestrel	0	0	4	9	4	1	3	7	7	5	2	42	25	17	5 ( 4 Apr)	28	24	22 Mar	6 Nov
94.	falcon sp.	0	0	0	1	0	0	0	1	0	0	0	2	0	2	1 (21 Apr)	2	2	21 Apr	24 Aug
95.	Red-footed Falcon	0	0	0	0	0	0	0	4	0	0	0	4	4	0	2 (24 Aug)	4	3	24 Aug	29 Aug
96.	Merlin	0	1	1	3	0	0	0	0	0	1	0	6	2	4	2 ( 4 Apr)	6	5	21 Feb	4 Oct
97.	Hobby	0	0	0	0	3	1	4	6	11	0	0	25	23	2	5 (24 Aug)	14	12	11 May	19 Sep
98.	Peregrine	0	1	5	5	0	0	3	1	6	5	0	26	19	7	3 (21 Mar)	25	21	21 Feb	12 Oct
99.	Alexandrine Parakeet	0	0	1	0	23	0	0	9	23	114	0	170	118	52	40 (17 Oct)	18	15	21 Mar	22 Oct
100.	Rose-ringed Parakeet	32	28	60	78	15	9	16	102	116	64	57	577	536	41	51 (20 Sep)	80	68	26 Jan	29 Nov
101.	Golden Oriole	0	0	0	0	0	0	1	0	0	0	0	1	0	1	1 (18 Jul)	1	1	18 Jul	18 Jul
102.	Jay	0	0	0	2	0	1	1	2	0	1	0	7	4	3	1 ( 8 Apr)	8	7	8 Apr	19 Oct
103.	Magpie	0	0	7	0	0	8	1	1	0	4	1	22	5	17	6 (20 Jun)	14	12	9 Mar	6 Nov
104.	Jackdaw	26	106	332	226	119	1291	2031	340	713	793	91	6068	3446	2622	646 (18 Jul)	95	81	2 Jan	29 Nov
105.	Rook	1	1	3	23	4	0	0	2	6	10	6	56	26	30	6 (12 Apr)	29	25	2 Jan	8 Nov
106.	Carrion Crow	0	0	1	0	2	2	3	4	0	14	4	30	25	5	5 ( 3 Oct)	19	16	20 Mar	29 Nov
107.	Raven	0	0	0	5	0	0	9	4	11	16	4	49	38	11	5 (19 Sep)	26	22	4 Apr	29 Nov
108.	Blue Tit	0	2	9	4	0	3	5	3	4	223	4	257	232	25	140 (19 Oct)	33	28	21 Feb	6 Nov
109.	Great Tit	0	3	16	5	2	26	4	6	5	18	1	86	61	25	13 (21 Jun)	38	32	15 Feb	8 Nov
110.	Wood Lark	0	0	3	0	1	0	0	0	0	3	2	9	5	4	3 (20 Mar)	7	6	20 Mar	6 Nov
111.	Skylark	0	27	88	4	0	0	0	0	0	1553	1059	2731	2607	124	1193 (19 Oct)	33	28	14 Feb	29 Nov
112.	Sand Martin	0	0	1	23	3	0	18	118	200	0	0	363	325	38	142 ( 7 Sep)	27	23	8 Mar	20 Sep
113.	Swallow	0	0	1	99	57	25	185	1999	2119	34	0	4519	4349	170	612 ( 7 Sep)	65	55	22 Mar	10 Oct
114.	House Martin	0	0	0	2	4	3	28	113	123	2	0	275	268	7	52 ( 7 Sep)	27	23	4 Apr	4 Oct
115.	Long-tailed Tit	0	0	0	0	0	0	0	0	1	23	9	33	27	6	9 ( 8 Oct)	9	8	19 Sep	8 Nov
116.	Chiffchaff	0	0	2	1	1	1	8	4	3	2	0	22	18	4	4 (29 Aug)	18	15	21 Mar	15 Oct
117.	Chiffchaff/Willow Warbler	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (16 Jun)	1	1	16 Jun	16 Jun
118.	Reed Warbler	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (24 Jul)	1	1	24 Jul	24 Jul
119.	Blackcap	0	0	0	0	0	0	0	1	0	0	0	1	1	0	1 (29 Aug)	1	1	29 Aug	29 Aug
120.	Firecrest	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 ( 4 Oct)	1	1	4 Oct	4 Oct
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
121.	Goldcrest	0	0	0	0	0	0	0	0	0	1	1	2	2	0	1 ( 4 Oct)	2	2	4 Oct	6 Nov
122.	Starling	1527	3224	1529	70	73	531	808	2307	1886	23981	3942	39878	37017	2861	6353 (19 Oct)	89	76	2 Jan	29 Nov
123.	Song Thrush	1	0	1	82	0	0	0	0	0	37	6	127	45	82	27 (12 Apr)	21	18	31 Jan	8 Nov
124.	Mistle Thrush	0	0	11	13	0	0	0	0	0	3	3	30	6	24	9 (21 Mar)	13	11	21 Mar	6 Nov
125.	Redwing	0	0	1017	96	0	0	0	0	0	390	433	1936	827	1109	920 (22 Mar)	22	19	9 Mar	29 Nov
126.	Blackbird	0	0	1	0	0	0	0	2	1	2	7	13	13	0	6 ( 8 Nov)	8	7	21 Mar	8 Nov
127.	Fieldfare	11	1	8	87	1	0	0	0	0	711	1370	2189	2035	154	1110 ( 6 Nov)	24	20	26 Jan	29 Nov
128.	Ring Ouzel	0	0	0	2	0	0	0	0	0	0	0	2	0	2	1 ( 4 Apr)	2	2	4 Apr	5 Apr
129.	thrush sp.	0	1	1	3	0	0	0	0	0	0	0	5	1	4	2 ( 3 Apr)	5	4	6 Feb	5 Apr
130.	Spotted Flycatcher	0	0	0	0	1	0	1	0	0	0	0	2	1	1	1 (11 May)	2	2	11 May	26 Jul
131.	Robin	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 ( 4 Apr)	1	1	4 Apr	4 Apr
132.	Black Redstart	0	0	3	0	0	0	0	0	0	0	0	3	0	3	2 (22 Mar)	2	2	21 Mar	22 Mar
133.	Whinchat	0	0	0	1	0	0	0	12	3	0	0	16	15	1	5 (24 Aug)	8	7	21 Apr	7 Sep
134.	Stonechat	0	0	1	0	0	0	1	0	0	0	0	2	1	1	1 (22 Mar)	2	2	22 Mar	24 Jul
135.	Wheatear	0	0	0	2	3	0	0	17	3	0	0	25	20	5	7 (26 Aug)	11	9	4 Apr	20 Sep
136.	Tree Sparrow	0	1	0	0	0	0	7	3	1	3	0	15	14	1	4 (26 Jul)	7	6	21 Feb	10 Oct
137.	House Sparrow	0	2	0	1	0	0	6	0	2	1	1	13	9	4	4 (30 Jul)	8	7	25 Feb	6 Nov
138.	Dunnock	0	0	0	1	0	0	0	0	2	2	0	5	4	1	1 ( 8 Apr)	6	5	8 Apr	12 Oct
139.	Blue-headed Wagtail	0	0	1	66	0	1	22	172	358	0	0	620	553	67	211 ( 7 Sep)	39	33	22 Mar	20 Sep
140.	Yellow Wagtail (flavissima)	0	0	0	0	0	0	0	1	1	0	0	2	2	0	1 (24 Aug)	2	2	24 Aug	6 Sep
141.	Grey-headed Wagtail	0	0	0	0	4	0	0	0	0	0	0	4	0	4	3 (12 May)	2	2	11 May	12 May
142.	Yellow wagtail sp.	0	0	0	0	6	0	0	0	0	0	0	6	0	6	4 (13 May)	2	2	12 May	13 May
143.	Grey Wagtail	0	0	8	1	0	0	0	0	2	46	15	72	64	8	8 (12 Oct)	31	26	8 Mar	29 Nov
144.	White Wagtail	2	8	121	58	5	9	23	12	34	96	8	376	192	184	48 (22 Mar)	73	62	26 Jan	8 Nov
145.	Pied Wagtail	0	0	1	1	0	0	0	0	0	0	0	2	0	2	1 (21 Mar)	2	2	21 Mar	7 Apr
146.	Meadow Pipit	1	23	82	2310	6	0	2	0	225	2222	135	5006	2588	2418	655 ( 5 Apr)	56	48	26 Jan	29 Nov
147.	Tree Pipit	0	0	0	4	3	0	0	1	1	0	0	9	2	7	3 (15 Apr)	8	7	12 Apr	20 Sep
148.	Water Pipit	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 (22 Mar)	1	1	22 Mar	22 Mar
149.	Chaffinch	2	16	301	22	3	4	3	11	51	5200	220	5833	5464	369	2404 (10 Oct)	64	54	26 Jan	29 Nov
150.	Brambling	0	0	0	1	0	0	0	0	0	34	3	38	36	2	12 (12 Oct)	12	10	8 Apr	8 Nov
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
151.	Chaffinch/Brambling	0	0	1	0	0	0	0	0	0	0	0	1	0	1	1 ( 9 Mar)	1	1	9 Mar	9 Mar
152.	Hawfinch	0	0	0	0	0	0	2	0	1	0	0	3	3	0	2 (26 Jul)	2	2	26 Jul	19 Sep
153.	Bullfinch	0	0	0	0	0	0	0	0	1	0	0	1	1	0	1 (19 Sep)	1	1	19 Sep	19 Sep
154.	Greenfinch	0	2	17	28	2	1	6	5	4	14	1	80	36	44	13 ( 8 Apr)	38	32	21 Feb	8 Nov
155.	Linnet	0	0	5	43	1	0	11	3	21	70	0	154	101	53	28 (10 Oct)	29	25	21 Mar	19 Oct
156.	Lesser Redpoll	0	0	0	0	0	0	0	0	0	17	0	17	17	0	16 (19 Oct)	2	2	17 Oct	19 Oct
157.	Goldfinch	2	12	10	31	8	5	17	39	8	25	2	159	93	66	31 ( 9 Aug)	55	47	2 Jan	6 Nov
158.	Siskin	0	0	0	1	0	0	1	0	1	42	61	106	100	6	50 ( 6 Nov)	16	14	12 Apr	8 Nov
159.	Reed Bunting	0	0	18	1	0	0	2	0	5	21	5	52	34	18	7 (12 Oct)	24	20	8 Mar	8 Nov
160.	Species unidentified	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1 (29 Nov)	1	1	29 Nov	29 Nov
161.	passerine sp.	0	0	0	1	0	0	0	0	0	10	0	11	10	1	8 ( 2 Oct)	4	3	8 Apr	16 Oct
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Common Noctule	0	0	0	0	0	0	0	0	0	1	0	1	1	0	1 (10 Oct)	1	1	10 Oct	10 Oct
	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	3	0	1	3	0	0	0	0	0	7	4	3	2 ( 8 Mar)	7	6	8 Mar	21 Jun
2.	Dark Clouded Yellow	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 ( 1 Jul)	1	1	1 Jul	1 Jul
3.	Brimstone	0	0	0	2	0	0	0	0	0	0	0	2	0	2	1 (12 Apr)	2	2	12 Apr	15 Apr
4.	European Peacock	0	1	8	12	0	0	1	0	1	0	1	24	4	20	6 (22 Mar)	13	11	21 Feb	8 Nov
5.	Speckled Wood	0	0	0	1	0	0	0	0	1	0	0	2	1	1	1 (15 Apr)	2	2	15 Apr	19 Sep
6.	Large White	0	0	0	0	0	1	3	1	2	0	0	7	7	0	3 ( 1 Jul)	6	5	21 Jun	19 Sep
7.	Green-veined White	0	0	0	8	0	0	0	0	0	0	0	8	0	8	3 ( 4 Apr)	4	3	4 Apr	12 Apr
8.	Small White	0	0	0	0	0	0	0	0	3	3	0	6	6	0	3 (19 Sep)	4	3	19 Sep	10 Oct
9.	white sp. (butterfly)	0	0	0	0	0	1	0	0	4	1	0	6	4	2	3 (19 Sep)	5	4	21 Jun	16 Oct
10.	Comma	0	0	0	1	0	0	0	0	0	0	0	1	0	1	1 (12 Apr)	1	1	12 Apr	12 Apr
11.	Red Admiral	0	0	2	0	1	1	16	3	5	2	0	30	27	3	13 ( 1 Jul)	15	13	8 Mar	10 Oct
12.	Painted Lady	0	0	0	0	0	1	0	0	0	0	0	1	1	0	1 (21 Jun)	1	1	21 Jun	21 Jun
	Other species
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
1.	Emperor Dragonfly	0	0	0	0	0	0	1	0	0	0	0	1	1	0	1 (19 Jul)	1	1	19 Jul	19 Jul
2.	Darter unknown	0	0	0	0	0	0	0	1	0	0	1	2	2	0	1 (26 Aug)	2	2	26 Aug	8 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.	Bumblebee sp.	0	1	8	8	0	0	0	0	0	0	0	17	2	15	5 (22 Mar)	12	10	21 Feb	23 Apr
	Species	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Totals	S	N	Maximum	Presence (%)	Presence (days)	First	Last
	Totals	12284	20286	17682	6126	2769	2828	6379	9628	14729	48941	27382	169034	130397	38637		100	85
	Observation hours	7:30	18:45	35:10	38:50	26:51	14:25	31:43	33:11	33:55	51:11	18:20	309:51

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Totals Aetsveldsche polder, Nigtevecht 2025