Select until 12 May

Totals Slikken van de Heen 2016 - 2025

	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
1.	Dark-bellied Brent Goose	31	159	77	110	53	44	90	45	69	0	678	75	0	159 (2017)
2.	Canada Goose	0	6	2	9	43	86	43	93	29	0	311	35	0	93 (2023)
3.	Barnacle Goose	674	2364	509	1381	769	1171	204	461	745	0	8278	920	0	2364 (2017)
4.	Greylag Goose	453	1478	918	3094	2161	432	480	710	1416	0	11142	1238	0	3094 (2019)
5.	Anser sp.	0	0	0	42	0	0	0	0	0	0	42	4.7	0	42 (2019)
6.	Pink-footed Goose	0	158	0	35	24	1	0	0	38	0	256	28	0	158 (2017)
7.	Tundra Bean Goose	63	304	291	244	612	59	25	20	92	0	1710	190	0	612 (2020)
8.	Bean Goose sp.	50	117	0	6	86	0	0	0	0	0	259	29	0	117 (2017)
9.	Eurasian White-fronted Goose	2428	1873	1472	2110	2666	256	862	689	1546	0	13902	1545	0	2666 (2020)
10.	Black Swan	0	2	0	0	2	0	1	0	1	0	6	0.7	0	2 (2017)
11.	Mute Swan	0	2	0	13	18	3	5	18	4	0	63	7	0	18 (2020)
12.	Bewick's Swan	2	41	2	47	39	21	0	0	0	0	152	17	0	47 (2019)
13.	Egyptian Goose	1	4	0	46	0	59	21	5	0	0	136	15	0	59 (2021)
14.	Shelduck	16	72	57	50	24	26	32	27	30	0	334	37	0	72 (2017)
15.	Ruddy Shelduck	3	3	9	1	2	9	6	0	0	0	33	3.7	0	9 (2018)
16.	Garganey	0	0	14	0	0	0	3	1	0	0	18	2	0	14 (2018)
17.	Shoveler	65	9	178	8	35	3	4	17	5	0	324	36	0	178 (2018)
18.	Gadwall	21	10	77	67	26	4	101	78	38	0	422	47	0	101 (2022)
19.	Wigeon	1576	296	398	394	457	111	176	248	32	0	3688	410	0	1576 (2016)
20.	Mallard	5	58	22	18	47	10	15	0	13	0	188	21	0	58 (2017)
21.	Pintail	148	239	219	768	1536	107	284	286	174	0	3761	418	0	1536 (2020)
22.	Teal	15	56	226	40	48	0	7	9	64	0	465	52	0	226 (2018)
23.	duck sp.	0	0	0	25	0	0	0	0	0	0	25	2.8	0	25 (2019)
24.	Pochard	0	1	103	15	17	0	0	3	5	0	144	16	0	103 (2018)
25.	Tufted Duck	0	10	186	8	4	0	0	2	7	0	217	24	0	186 (2018)
26.	Goldeneye	0	4	0	21	3	1	1	0	1	0	31	3.4	0	21 (2019)
27.	Goosander	5	29	46	11	15	0	10	2	7	0	125	14	0	46 (2018)
28.	Red-breasted Merganser	6	9	7	15	2	0	4	8	0	0	51	5.7	0	15 (2019)
29.	Swift	2	1788	20	104	7	24	0	55	1128	0	3128	348	0	1788 (2017)
30.	Cuckoo	1	0	1	0	0	1	2	0	0	0	5	0.6	0	2 (2022)
31.	Stock Dove	61	235	449	345	505	484	553	777	253	0	3662	407	0	777 (2023)
32.	Woodpigeon	319	993	1976	1513	2170	1052	549	1854	2247	0	12673	1408	0	2247 (2024)
33.	Turtle Dove	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
34.	Collared Dove	4	0	14	3	2	3	15	10	2	0	53	5.9	0	15 (2022)
35.	Coot	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
36.	Crane	0	0	12	0	0	0	0	0	0	0	12	1.3	0	12 (2018)
37.	Great Crested Grebe	1	2	2	10	0	0	0	0	0	0	15	1.7	0	10 (2019)
38.	Greater Flamingo	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
39.	Oystercatcher	0	6	28	14	10	11	3	9	5	0	86	9.6	0	28 (2018)
40.	Black-winged Stilt	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
41.	Avocet	0	0	2	2	12	0	0	0	0	0	16	1.8	0	12 (2020)
42.	Grey Plover	1	8	4	4	6	2	10	0	2	0	37	4.1	0	10 (2022)
43.	Golden Plover	171	2540	928	3680	6798	2287	4665	6065	3777	0	30911	3435	1300	6798 (2020)
44.	Dotterel	0	0	0	1	0	0	1	0	6	0	8	0.9	0	6 (2024)
45.	Ringed Plover	22	15	17	4	0	0	0	7	7	0	72	8	0	22 (2016)
46.	Little Ringed Plover	0	0	3	1	0	0	0	1	0	0	5	0.6	0	3 (2018)
47.	Lapwing	690	1720	1575	6434	7384	5541	2954	2584	6118	0	35000	3889	1000	7384 (2020)
48.	Whimbrel	0	1	27	2	6	35	15	0	1	0	87	9.7	0	35 (2021)
49.	Curlew	8	26	51	119	42	26	30	30	11	0	343	38	0	119 (2019)
50.	Bar-tailed Godwit	0	0	3	0	0	0	26	6	0	0	35	3.9	0	26 (2022)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
51.	Black-tailed Godwit	6	0	275	0	52	4	5	23	0	0	365	41	0	275 (2018)
52.	Jack Snipe	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
53.	Snipe	121	206	175	147	196	23	111	65	24	0	1068	119	0	206 (2017)
54.	Common Sandpiper	0	2	0	6	4	3	0	1	0	0	16	1.8	0	6 (2019)
55.	Green Sandpiper	11	7	5	2	6	6	2	3	5	0	47	5.2	0	11 (2016)
56.	Wood Sandpiper	0	0	2	0	0	0	0	0	0	0	2	0.2	0	2 (2018)
57.	Redshank	0	0	47	0	75	11	4	0	0	0	137	15	0	75 (2020)
58.	Spotted Redshank	4	6	2	1	2	5	0	0	0	0	20	2.2	0	6 (2017)
59.	Greenshank	5	10	31	2	9	9	7	2	1	0	76	8.4	0	31 (2018)
60.	Turnstone	0	0	2	5	5	0	0	0	0	0	12	1.3	0	5 (2019)
61.	Ruff	17	48	25	5	20	17	4	15	21	0	172	19	0	48 (2017)
62.	wader sp.	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
63.	Curlew Sandpiper	5	0	0	0	0	0	0	0	0	0	5	0.6	0	5 (2016)
64.	Dunlin	1	14	28	0	10	0	0	0	0	0	53	5.9	0	28 (2018)
65.	Caspian Tern	0	0	2	0	2	0	0	2	0	0	6	0.7	0	2 (2018)
66.	Black Tern	0	4	16	0	0	0	0	0	0	0	20	2.2	0	16 (2018)
67.	Arctic Tern	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
68.	Common/Arctic Tern	0	0	1	2	1	0	0	0	0	0	4	0.4	0	2 (2019)
69.	Common Tern	0	13	70	57	27	31	0	19	12	0	229	25	0	70 (2018)
70.	Sandwich Tern	0	0	4	1	0	0	0	0	0	0	5	0.6	0	4 (2018)
71.	Black-headed Gull	363	1237	5337	1009	1044	335	153	90	365	0	9933	1104	0	5337 (2018)
72.	Mediterranean Gull	0	0	20	1	4	0	0	6	1	0	32	3.6	0	20 (2018)
73.	Common Gull	41	148	203	97	17	6	8	55	38	0	613	68	0	203 (2018)
74.	Caspian Gull	1	0	0	1	1	0	0	0	1	0	4	0.4	0	1 (2016)
75.	Herring Gull	28	123	167	64	37	59	110	78	54	0	720	80	0	167 (2018)
76.	Yellow-legged Gull	0	0	2	0	1	0	0	0	0	0	3	0.3	0	2 (2018)
77.	Great Black-backed Gull	16	4	16	13	3	2	8	4	2	0	68	7.6	0	16 (2016)
78.	Lesser Black-backed Gull	38	125	269	112	71	53	33	60	52	0	813	90	0	269 (2018)
79.	Black Stork	0	0	0	0	5	0	0	0	0	0	5	0.6	0	5 (2020)
80.	White Stork	1	0	2	3	2	0	0	0	0	0	8	0.9	0	3 (2019)
81.	Cormorant	2246	2551	6554	4845	2620	623	1264	1664	1767	0	24134	2682	0	6554 (2018)
82.	Spoonbill	355	96	230	400	90	66	29	328	144	0	1738	193	0	400 (2019)
83.	Little Egret	0	6	5	10	1	2	9	5	4	0	42	4.7	0	10 (2019)
84.	Cattle Egret	1	14	6	1	1	3	9	23	1	0	59	6.6	0	23 (2023)
85.	Great White Egret	16	26	44	87	17	20	19	51	70	0	350	39	0	87 (2019)
86.	Grey Heron	37	43	34	48	49	12	11	51	26	0	311	35	5	51 (2023)
87.	Purple Heron	0	0	5	0	0	2	0	0	0	0	7	0.8	0	5 (2018)
88.	Osprey	2	4	12	8	3	1	4	3	8	0	45	5	0	12 (2018)
89.	Honey Buzzard	2	0	2	2	4	0	4	1	2	0	17	1.9	0	4 (2020)
90.	eagle sp.	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
91.	Sparrowhawk	27	44	53	95	62	21	35	50	30	0	417	46	0	95 (2019)
92.	Goshawk	1	1	2	1	2	0	1	0	0	0	8	0.9	0	2 (2018)
93.	Marsh Harrier	44	10	60	70	59	16	17	56	37	0	369	41	0	70 (2019)
94.	Hen Harrier	2	4	8	9	10	1	1	2	3	0	40	4.4	0	10 (2020)
95.	Pallid Harrier	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
96.	Hen/Montagu's/Pallid Harrier	1	0	1	1	0	0	0	0	0	0	3	0.3	0	1 (2016)
97.	Red Kite	0	0	8	1	0	0	0	0	0	0	9	1	0	8 (2018)
98.	Black Kite	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
99.	White-tailed Eagle	0	0	0	0	1	0	0	1	0	0	2	0.2	0	1 (2020)
100.	Rough-legged Buzzard	0	1	1	0	0	0	0	0	0	0	2	0.2	0	1 (2017)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
101.	Common Buzzard	16	20	35	68	91	29	8	82	58	0	407	45	3	91 (2020)
102.	Short-eared Owl	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
103.	Great Spotted Woodpecker	10	65	22	86	39	10	20	44	10	0	306	34	0	86 (2019)
104.	Green Woodpecker	0	0	0	1	0	0	0	0	1	0	2	0.2	0	1 (2019)
105.	Kestrel	5	3	9	26	21	0	1	6	14	0	85	9.4	0	26 (2019)
106.	Red-footed Falcon	1	0	0	0	0	0	0	0	1	0	2	0.2	0	1 (2016)
107.	Merlin	3	6	2	9	8	2	0	4	3	0	37	4.1	0	9 (2019)
108.	Hobby	1	4	3	8	2	1	6	0	2	0	27	3	0	8 (2019)
109.	Peregrine	2	9	3	2	1	2	4	3	1	0	27	3	0	9 (2017)
110.	Great Grey Shrike	0	0	1	0	0	0	1	0	0	0	2	0.2	0	1 (2018)
111.	Jay	26	39	20	1891	24	252	33	193	75	0	2553	284	0	1891 (2019)
112.	Magpie	0	0	0	4	0	0	0	0	1	0	5	0.6	0	4 (2019)
113.	Jackdaw	143	416	525	1140	1225	138	63	1043	1090	0	5783	643	0	1225 (2020)
114.	Rook	0	2	0	1	0	0	0	1	2	0	6	0.7	0	2 (2017)
115.	Carrion Crow	19	32	34	22	76	53	45	53	57	0	391	43	0	76 (2020)
116.	Coal Tit	0	326	0	18	2	126	3	2	0	0	477	53	0	326 (2017)
117.	Blue Tit	131	447	82	1061	245	1379	205	190	153	0	3893	433	0	1379 (2021)
118.	Great Tit	132	349	190	513	423	199	221	486	192	0	2705	301	0	513 (2019)
119.	Penduline Tit	5	1	0	0	1	0	0	0	0	0	7	0.8	0	5 (2016)
120.	Bearded Tit	1	19	0	15	0	0	0	0	0	0	35	3.9	0	19 (2017)
121.	Wood Lark	3	37	38	27	55	9	29	25	59	0	282	31	0	59 (2024)
122.	Skylark	1303	4009	2279	3776	921	569	493	477	1298	0	15125	1681	0	4009 (2017)
123.	Sand Martin	293	278	1868	882	1623	275	21	87	1632	0	6959	773	0	1868 (2018)
124.	Swallow	1290	1161	5322	2961	1968	473	1025	1090	624	0	15914	1768	0	5322 (2018)
125.	House Martin	279	717	3137	433	607	23	67	104	512	0	5879	653	0	3137 (2018)
126.	Long-tailed Tit	6	38	37	34	24	0	17	5	13	0	174	19	0	38 (2017)
127.	Yellow-browed Warbler	1	0	0	0	1	0	0	0	0	0	2	0.2	0	1 (2016)
128.	Willow Warbler	0	0	2	0	0	1	1	4	2	0	10	1.1	0	4 (2023)
129.	Chiffchaff	10	18	5	47	27	18	15	30	32	0	202	22	4	47 (2019)
130.	Chiffchaff/Willow Warbler	4	0	0	1	1	0	0	0	0	0	6	0.7	0	4 (2016)
131.	Blackcap	8	3	5	16	13	0	6	13	0	0	64	7.1	0	16 (2019)
132.	Lesser Whitethroat	0	0	0	0	0	0	1	1	0	0	2	0.2	0	1 (2022)
133.	Firecrest	0	3	2	6	1	0	4	0	3	0	19	2.1	0	6 (2019)
134.	Goldcrest	26	18	78	165	228	4	4	4	15	0	542	60	0	228 (2020)
135.	Nuthatch	0	1	0	3	0	0	0	0	0	0	4	0.4	0	3 (2019)
136.	Short-toed Tree Creeper	1	0	0	1	0	1	0	0	0	0	3	0.3	0	1 (2016)
137.	Starling	4062	57923	40319	21680	25394	12975	6459	5815	15728	0	190355	21151	90	57923 (2017)
138.	Song Thrush	1043	2452	3244	4017	2439	342	2468	1357	1725	0	19087	2121	0	4017 (2019)
139.	Mistle Thrush	54	26	16	38	31	29	17	9	37	0	257	29	0	54 (2016)
140.	Redwing	2000	23519	5462	31036	90738	3796	2050	3210	11240	0	173051	19228	0	90738 (2020)
141.	Blackbird	159	205	79	616	176	78	76	40	33	0	1462	162	0	616 (2019)
142.	Fieldfare	936	5603	770	9714	2463	192	73	1063	445	0	21259	2362	300	9714 (2019)
143.	Ring Ouzel	0	3	0	47	7	5	1	3	2	0	68	7.6	0	47 (2019)
144.	Spotted Flycatcher	0	0	0	0	0	0	0	4	0	0	4	0.4	0	4 (2023)
145.	Robin	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
146.	Pied Flycatcher	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
147.	Black Redstart	0	0	1	0	1	0	0	1	0	0	3	0.3	0	1 (2018)
148.	Redstart	3	1	0	1	0	0	0	1	0	0	6	0.7	0	3 (2016)
149.	Whinchat	0	1	0	0	0	1	0	1	0	0	3	0.3	0	1 (2017)
150.	Stonechat	0	6	0	0	0	0	0	0	0	0	6	0.7	0	6 (2017)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
151.	Tree Sparrow	50	117	17	32	37	12	10	4	1	0	280	31	0	117 (2017)
152.	House Sparrow	7	6	0	0	0	0	5	0	0	0	18	2	0	7 (2016)
153.	Dunnock	171	145	69	134	158	45	58	38	33	0	851	95	0	171 (2016)
154.	Blue-headed Wagtail	0	0	3	3	128	1	0	0	0	0	135	15	0	128 (2020)
155.	Yellow wagtail sp.	84	73	296	31	28	26	38	28	18	0	622	69	0	296 (2018)
156.	Grey Wagtail	52	120	45	50	82	20	16	12	12	0	409	45	0	120 (2017)
157.	White Wagtail	0	1	103	2	98	4	0	16	0	0	224	25	0	103 (2018)
158.	alba wagtail sp.	193	303	124	166	16	37	44	115	43	0	1041	116	0	303 (2017)
159.	Meadow Pipit	3402	9246	3389	3500	4760	2056	1607	681	522	0	29163	3240	0	9246 (2017)
160.	Tree Pipit	24	15	18	10	17	8	3	15	18	0	128	14	0	24 (2016)
161.	Olive-backed Pipit	0	1	0	1	0	0	0	0	0	0	2	0.2	0	1 (2017)
162.	Tree Pipit/Olive-backed Pipit	1	1	0	0	1	0	0	0	0	0	3	0.3	0	1 (2016)
163.	Water Pipit	1	4	9	7	10	0	0	0	3	0	34	3.8	0	10 (2020)
164.	Rock Pipit	1	10	6	1	1	2	0	0	0	0	21	2.3	0	10 (2017)
165.	Rock Pipit/Water Pipit	22	25	30	12	13	0	0	1	0	0	103	11	0	30 (2018)
166.	pipit sp.	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
167.	Chaffinch	3575	32512	12486	13395	24714	9521	6528	1574	5121	0	109426	12158	0	32512 (2017)
168.	Brambling	46	588	491	190	255	1139	24	53	24	0	2810	312	0	1139 (2021)
169.	Hawfinch	1	80	3	13	4	3	0	0	15	0	119	13	0	80 (2017)
170.	Bullfinch	0	5	0	0	0	0	0	1	2	0	8	0.9	0	5 (2017)
171.	Northern Bullfinch (trumpet call)	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
172.	Greenfinch	77	332	190	182	252	79	27	98	45	0	1282	142	0	332 (2017)
173.	Linnet	206	652	451	256	381	147	223	200	10	0	2526	281	0	652 (2017)
174.	Mealy Redpoll	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
175.	Lesser Redpoll	0	0	0	0	3	0	0	0	0	0	3	0.3	0	3 (2020)
176.	redpoll sp.	0	164	55	4	33	0	1	0	0	0	257	29	0	164 (2017)
177.	Crossbill	15	43	1	13	4	10	0	25	0	0	111	12	0	43 (2017)
178.	Goldfinch	19	224	57	178	336	84	127	104	87	0	1216	135	27	336 (2020)
179.	Serin	0	1	0	2	0	0	0	2	0	0	5	0.6	0	2 (2019)
180.	Siskin	100	848	376	6900	1331	1415	393	1544	430	0	13337	1482	0	6900 (2019)
181.	Lapland Bunting	0	2	0	0	0	0	0	0	0	0	2	0.2	0	2 (2017)
182.	Corn Bunting	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
183.	Yellowhammer	0	1	1	0	0	0	0	1	0	0	3	0.3	0	1 (2017)
184.	Ortolan Bunting	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
185.	Little Bunting	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
186.	Reed Bunting	80	244	241	210	155	54	71	31	69	0	1155	128	0	244 (2017)
187.	bunting sp.	2	0	0	2	0	0	1	0	0	0	5	0.6	0	2 (2016)
188.	passerine sp.	1	0	0	1	0	0	0	0	0	0	2	0.2	0	1 (2016)
	Other species
1.	Small Tortoiseshell	0	5	0	0	0	1	0	2	2	0	10	1.1	0	5 (2017)
2.	Dark Clouded Yellow	0	2	0	1	0	0	0	0	0	0	3	0.3	0	2 (2017)
3.	European Peacock	30	0	3	1	1	1	1	1	81	0	119	13	0	81 (2024)
4.	Hummingbird Hawk-moth	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
5.	Swallowtail	0	0	0	1	0	0	0	0	2	0	3	0.3	0	2 (2024)
6.	Speckled Wood	1	2	0	0	0	0	0	0	9	0	12	1.3	0	9 (2024)
7.	Large White	1	1	0	0	0	0	0	0	0	0	2	0.2	0	1 (2016)
8.	Small White	10	0	0	0	2	0	0	0	0	0	12	1.3	0	10 (2016)
9.	white sp. (butterfly)	2	1	0	1	51	2	0	13	340	0	410	46	0	340 (2024)
10.	Comma	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
11.	Red Admiral	54	3	9	26	14	4	1	12	287	0	410	46	0	287 (2024)
12.	Painted Lady	1	0	0	1	0	0	0	0	2	0	4	0.4	0	2 (2024)
	Other species
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
1.	Darter unknown	0	0	648	49	22	7	38	7	119	0	890	99	0	648 (2018)
2.	Migrant Hawker	0	0	2	1	1	0	0	0	1	0	5	0.6	0	2 (2018)
3.	Dragonfly unknown	0	0	0	2	0	0	0	0	0	0	2	0.2	0	2 (2019)
	Other species
1.	Bumblebee sp.	0	2	29	3	4	0	1	1	22	0	62	6.9	0	29 (2018)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
	Totals	30440	162928	106396	133672	191933	48860	35702	36812	62919	0	809662	89962	2729
	Observation hours	79:45	141:20	175:32	155:37	153:55	64:42	67:25	85:50	77:23		1,001:29	111:17

Trektellen

Totals Slikken van de Heen 2016 - 2025