Select until 18 July

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	68	0	159 (2017)
2.	Canada Goose	0	6	2	9	43	86	43	93	29	0	311	31	0	93 (2023)
3.	Barnacle Goose	674	2364	509	1381	769	1171	204	461	745	0	8278	828	0	2364 (2017)
4.	Greylag Goose	453	1478	918	3094	2161	432	480	710	1416	1974	13116	1312	0	3094 (2019)
5.	Anser sp.	0	0	0	42	0	0	0	0	0	0	42	4.2	0	42 (2019)
6.	Domestic Goose	0	0	0	0	0	0	0	0	0	2	2	0.2	0	2 (2025)
7.	Pink-footed Goose	0	158	0	35	24	1	0	0	38	0	256	26	0	158 (2017)
8.	Tundra Bean Goose	63	304	291	244	612	59	25	20	92	0	1710	171	0	612 (2020)
9.	Bean Goose sp.	50	117	0	6	86	0	0	0	0	0	259	26	0	117 (2017)
10.	Eurasian White-fronted Goose	2428	1873	1472	2110	2666	256	862	689	1546	0	13902	1390	0	2666 (2020)
11.	Black Swan	0	2	0	0	2	0	1	0	1	0	6	0.6	0	2 (2017)
12.	Mute Swan	0	2	0	13	18	3	5	18	4	0	63	6.3	0	18 (2020)
13.	Bewick's Swan	2	41	2	47	39	21	0	0	0	0	152	15	0	47 (2019)
14.	Egyptian Goose	1	4	0	46	0	59	21	5	0	0	136	14	0	59 (2021)
15.	Shelduck	16	72	57	50	24	26	32	27	30	0	334	33	0	72 (2017)
16.	Ruddy Shelduck	3	3	9	1	2	9	6	0	0	0	33	3.3	0	9 (2018)
17.	Garganey	0	0	14	0	0	0	3	1	0	0	18	1.8	0	14 (2018)
18.	Shoveler	65	9	178	8	35	3	4	17	5	0	324	32	0	178 (2018)
19.	Gadwall	21	10	77	67	26	4	101	78	38	101	523	52	0	101 (2022)
20.	Wigeon	1576	296	398	394	457	111	176	248	32	0	3688	369	0	1576 (2016)
21.	Mallard	5	58	22	18	47	10	15	0	13	0	188	19	0	58 (2017)
22.	Pintail	148	239	219	768	1536	107	284	286	174	0	3761	376	0	1536 (2020)
23.	Teal	15	56	226	40	48	0	7	9	64	8	473	47	0	226 (2018)
24.	duck sp.	0	0	0	25	0	0	0	0	0	0	25	2.5	0	25 (2019)
25.	Pochard	0	1	103	15	17	0	0	3	5	9	153	15	0	103 (2018)
26.	Tufted Duck	0	10	186	8	4	0	0	2	7	6	223	22	0	186 (2018)
27.	Goldeneye	0	4	0	21	3	1	1	0	1	0	31	3.1	0	21 (2019)
28.	Goosander	5	29	46	11	15	0	10	2	7	0	125	13	0	46 (2018)
29.	Red-breasted Merganser	6	9	7	15	2	0	4	8	0	0	51	5.1	0	15 (2019)
30.	Swift	2	1788	20	104	7	24	0	55	1128	1355	4483	448	0	1788 (2017)
31.	Cuckoo	1	0	1	0	0	1	2	0	0	0	5	0.5	0	2 (2022)
32.	Stock Dove	61	235	449	345	505	484	553	777	253	0	3662	366	0	777 (2023)
33.	Woodpigeon	319	993	1976	1513	2170	1052	549	1854	2247	0	12673	1267	0	2247 (2024)
34.	Turtle Dove	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
35.	Collared Dove	4	0	14	3	2	3	15	10	2	0	53	5.3	0	15 (2022)
36.	Coot	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
37.	Crane	0	0	12	0	0	0	0	0	0	0	12	1.2	0	12 (2018)
38.	Great Crested Grebe	1	2	2	10	0	0	0	0	0	0	15	1.5	0	10 (2019)
39.	Greater Flamingo	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
40.	Oystercatcher	0	6	28	14	10	11	3	9	5	27	113	11	0	28 (2018)
41.	Black-winged Stilt	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
42.	Avocet	0	0	2	2	12	0	0	0	0	0	16	1.6	0	12 (2020)
43.	Grey Plover	1	8	4	4	6	2	10	0	2	0	37	3.7	0	10 (2022)
44.	Golden Plover	171	2540	928	3680	6798	2287	4665	6065	3777	6	30917	3092	1300	6798 (2020)
45.	Dotterel	0	0	0	1	0	0	1	0	6	0	8	0.8	0	6 (2024)
46.	Ringed Plover	22	15	17	4	0	0	0	7	7	0	72	7.2	0	22 (2016)
47.	Little Ringed Plover	0	0	3	1	0	0	0	1	0	0	5	0.5	0	3 (2018)
48.	Lapwing	690	1720	1575	6434	7384	5541	2954	2584	6118	45	35045	3505	1000	7384 (2020)
49.	Whimbrel	0	1	27	2	6	35	15	0	1	10	97	9.7	0	35 (2021)
50.	Curlew	8	26	51	119	42	26	30	30	11	12	355	36	0	119 (2019)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
51.	Bar-tailed Godwit	0	0	3	0	0	0	26	6	0	0	35	3.5	0	26 (2022)
52.	Black-tailed Godwit	6	0	275	0	52	4	5	23	0	1	366	37	0	275 (2018)
53.	Jack Snipe	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
54.	Snipe	121	206	175	147	196	23	111	65	24	0	1068	107	0	206 (2017)
55.	Common Sandpiper	0	2	0	6	4	3	0	1	0	0	16	1.6	0	6 (2019)
56.	Green Sandpiper	11	7	5	2	6	6	2	3	5	2	49	4.9	0	11 (2016)
57.	Wood Sandpiper	0	0	2	0	0	0	0	0	0	0	2	0.2	0	2 (2018)
58.	Redshank	0	0	47	0	75	11	4	0	0	0	137	14	0	75 (2020)
59.	Spotted Redshank	4	6	2	1	2	5	0	0	0	0	20	2	0	6 (2017)
60.	Greenshank	5	10	31	2	9	9	7	2	1	2	78	7.8	0	31 (2018)
61.	Turnstone	0	0	2	5	5	0	0	0	0	0	12	1.2	0	5 (2019)
62.	Ruff	17	48	25	5	20	17	4	15	21	0	172	17	0	48 (2017)
63.	wader sp.	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
64.	Curlew Sandpiper	5	0	0	0	0	0	0	0	0	0	5	0.5	0	5 (2016)
65.	Dunlin	1	14	28	0	10	0	0	0	0	0	53	5.3	0	28 (2018)
66.	Caspian Tern	0	0	2	0	2	0	0	2	0	0	6	0.6	0	2 (2018)
67.	Black Tern	0	4	16	0	0	0	0	0	0	0	20	2	0	16 (2018)
68.	Arctic Tern	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
69.	Common/Arctic Tern	0	0	1	2	1	0	0	0	0	0	4	0.4	0	2 (2019)
70.	Common Tern	0	13	70	57	27	31	0	19	12	14	243	24	0	70 (2018)
71.	Sandwich Tern	0	0	4	1	0	0	0	0	0	0	5	0.5	0	4 (2018)
72.	Black-headed Gull	363	1237	5337	1009	1044	335	153	90	365	158	10091	1009	0	5337 (2018)
73.	Mediterranean Gull	0	0	20	1	4	0	0	6	1	3	35	3.5	0	20 (2018)
74.	Common Gull	41	148	203	97	17	6	8	55	38	5	618	62	0	203 (2018)
75.	Caspian Gull	1	0	0	1	1	0	0	0	1	1	5	0.5	0	1 (2016)
76.	Herring Gull	28	123	167	64	37	59	110	78	54	61	781	78	0	167 (2018)
77.	Yellow-legged Gull	0	0	2	0	1	0	0	0	0	0	3	0.3	0	2 (2018)
78.	Great Black-backed Gull	16	4	16	13	3	2	8	4	2	0	68	6.8	0	16 (2016)
79.	Lesser Black-backed Gull	38	125	269	112	71	53	33	60	52	147	960	96	0	269 (2018)
80.	Black Stork	0	0	0	0	5	0	0	0	0	0	5	0.5	0	5 (2020)
81.	White Stork	1	0	2	3	2	0	0	0	0	0	8	0.8	0	3 (2019)
82.	Cormorant	2246	2551	6554	4845	2620	623	1264	1664	1767	30	24164	2416	0	6554 (2018)
83.	Spoonbill	355	96	230	400	90	66	29	328	144	0	1738	174	0	400 (2019)
84.	Little Egret	0	6	5	10	1	2	9	5	4	1	43	4.3	0	10 (2019)
85.	Cattle Egret	1	14	6	1	1	3	9	23	1	0	59	5.9	0	23 (2023)
86.	Great White Egret	16	26	44	87	17	20	19	51	70	0	350	35	0	87 (2019)
87.	Grey Heron	37	43	34	48	49	12	11	51	26	9	320	32	5	51 (2023)
88.	Purple Heron	0	0	5	0	0	2	0	0	0	0	7	0.7	0	5 (2018)
89.	Osprey	2	4	12	8	3	1	4	3	8	0	45	4.5	0	12 (2018)
90.	Honey Buzzard	2	0	2	2	4	0	4	1	2	0	17	1.7	0	4 (2020)
91.	eagle sp.	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
92.	Sparrowhawk	27	44	53	95	62	21	35	50	30	0	417	42	0	95 (2019)
93.	Goshawk	1	1	2	1	2	0	1	0	0	0	8	0.8	0	2 (2018)
94.	Marsh Harrier	44	10	60	70	59	16	17	56	37	1	370	37	0	70 (2019)
95.	Hen Harrier	2	4	8	9	10	1	1	2	3	0	40	4	0	10 (2020)
96.	Pallid Harrier	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
97.	Hen/Montagu's/Pallid Harrier	1	0	1	1	0	0	0	0	0	0	3	0.3	0	1 (2016)
98.	Red Kite	0	0	8	1	0	0	0	0	0	0	9	0.9	0	8 (2018)
99.	Black Kite	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
100.	White-tailed Eagle	0	0	0	0	1	0	0	1	0	0	2	0.2	0	1 (2020)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
101.	Rough-legged Buzzard	0	1	1	0	0	0	0	0	0	0	2	0.2	0	1 (2017)
102.	Common Buzzard	16	20	35	68	91	29	8	82	58	0	407	41	3	91 (2020)
103.	Short-eared Owl	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
104.	Great Spotted Woodpecker	10	65	22	86	39	10	20	44	10	0	306	31	0	86 (2019)
105.	Green Woodpecker	0	0	0	1	0	0	0	0	1	0	2	0.2	0	1 (2019)
106.	Kestrel	5	3	9	26	21	0	1	6	14	0	85	8.5	0	26 (2019)
107.	Red-footed Falcon	1	0	0	0	0	0	0	0	1	0	2	0.2	0	1 (2016)
108.	Merlin	3	6	2	9	8	2	0	4	3	0	37	3.7	0	9 (2019)
109.	Hobby	1	4	3	8	2	1	6	0	2	0	27	2.7	0	8 (2019)
110.	Peregrine	2	9	3	2	1	2	4	3	1	0	27	2.7	0	9 (2017)
111.	Great Grey Shrike	0	0	1	0	0	0	1	0	0	0	2	0.2	0	1 (2018)
112.	Jay	26	39	20	1891	24	252	33	193	75	0	2553	255	0	1891 (2019)
113.	Magpie	0	0	0	4	0	0	0	0	1	0	5	0.5	0	4 (2019)
114.	Jackdaw	143	416	525	1140	1225	138	63	1043	1090	0	5783	578	0	1225 (2020)
115.	Rook	0	2	0	1	0	0	0	1	2	0	6	0.6	0	2 (2017)
116.	Carrion Crow	19	32	34	22	76	53	45	53	57	0	391	39	0	76 (2020)
117.	Coal Tit	0	326	0	18	2	126	3	2	0	0	477	48	0	326 (2017)
118.	Blue Tit	131	447	82	1061	245	1379	205	190	153	1	3894	389	0	1379 (2021)
119.	Great Tit	132	349	190	513	423	199	221	486	192	1	2706	271	0	513 (2019)
120.	Penduline Tit	5	1	0	0	1	0	0	0	0	0	7	0.7	0	5 (2016)
121.	Bearded Tit	1	19	0	15	0	0	0	0	0	0	35	3.5	0	19 (2017)
122.	Wood Lark	3	37	38	27	55	9	29	25	59	0	282	28	0	59 (2024)
123.	Skylark	1303	4009	2279	3776	921	569	493	477	1298	0	15125	1513	0	4009 (2017)
124.	Sand Martin	293	278	1868	882	1623	275	21	87	1632	27	6986	699	0	1868 (2018)
125.	Swallow	1290	1161	5322	2961	1968	473	1025	1090	624	54	15968	1597	0	5322 (2018)
126.	House Martin	279	717	3137	433	607	23	67	104	512	18	5897	590	0	3137 (2018)
127.	Long-tailed Tit	6	38	37	34	24	0	17	5	13	0	174	17	0	38 (2017)
128.	Yellow-browed Warbler	1	0	0	0	1	0	0	0	0	0	2	0.2	0	1 (2016)
129.	Willow Warbler	0	0	2	0	0	1	1	4	2	0	10	1	0	4 (2023)
130.	Chiffchaff	10	18	5	47	27	18	15	30	32	1	203	20	4	47 (2019)
131.	Chiffchaff/Willow Warbler	4	0	0	1	1	0	0	0	0	0	6	0.6	0	4 (2016)
132.	Blackcap	8	3	5	16	13	0	6	13	0	0	64	6.4	0	16 (2019)
133.	Lesser Whitethroat	0	0	0	0	0	0	1	1	0	0	2	0.2	0	1 (2022)
134.	Firecrest	0	3	2	6	1	0	4	0	3	0	19	1.9	0	6 (2019)
135.	Goldcrest	26	18	78	165	228	4	4	4	15	0	542	54	0	228 (2020)
136.	Nuthatch	0	1	0	3	0	0	0	0	0	0	4	0.4	0	3 (2019)
137.	Short-toed Tree Creeper	1	0	0	1	0	1	0	0	0	0	3	0.3	0	1 (2016)
138.	Starling	4062	57923	40319	21680	25394	12975	6459	5815	15728	60	190415	19042	90	57923 (2017)
139.	Song Thrush	1043	2452	3244	4017	2439	342	2468	1357	1725	0	19087	1909	0	4017 (2019)
140.	Mistle Thrush	54	26	16	38	31	29	17	9	37	0	257	26	0	54 (2016)
141.	Redwing	2000	23519	5462	31036	90738	3796	2050	3210	11240	0	173051	17305	0	90738 (2020)
142.	Blackbird	159	205	79	616	176	78	76	40	33	0	1462	146	0	616 (2019)
143.	Fieldfare	936	5603	770	9714	2463	192	73	1063	445	0	21259	2126	300	9714 (2019)
144.	Ring Ouzel	0	3	0	47	7	5	1	3	2	0	68	6.8	0	47 (2019)
145.	Spotted Flycatcher	0	0	0	0	0	0	0	4	0	0	4	0.4	0	4 (2023)
146.	Robin	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
147.	Pied Flycatcher	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
148.	Black Redstart	0	0	1	0	1	0	0	1	0	0	3	0.3	0	1 (2018)
149.	Redstart	3	1	0	1	0	0	0	1	0	0	6	0.6	0	3 (2016)
150.	Whinchat	0	1	0	0	0	1	0	1	0	0	3	0.3	0	1 (2017)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
151.	Stonechat	0	6	0	0	0	0	0	0	0	0	6	0.6	0	6 (2017)
152.	Tree Sparrow	50	117	17	32	37	12	10	4	1	0	280	28	0	117 (2017)
153.	House Sparrow	7	6	0	0	0	0	5	0	0	0	18	1.8	0	7 (2016)
154.	Dunnock	171	145	69	134	158	45	58	38	33	0	851	85	0	171 (2016)
155.	Blue-headed Wagtail	0	0	3	3	128	1	0	0	0	0	135	14	0	128 (2020)
156.	Yellow wagtail sp.	84	73	296	31	28	26	38	28	18	2	624	62	0	296 (2018)
157.	Grey Wagtail	52	120	45	50	82	20	16	12	12	0	409	41	0	120 (2017)
158.	White Wagtail	0	1	103	2	98	4	0	16	0	0	224	22	0	103 (2018)
159.	alba wagtail sp.	193	303	124	166	16	37	44	115	43	0	1041	104	0	303 (2017)
160.	Meadow Pipit	3402	9246	3389	3500	4760	2056	1607	681	522	0	29163	2916	0	9246 (2017)
161.	Tree Pipit	24	15	18	10	17	8	3	15	18	0	128	13	0	24 (2016)
162.	Olive-backed Pipit	0	1	0	1	0	0	0	0	0	0	2	0.2	0	1 (2017)
163.	Tree Pipit/Olive-backed Pipit	1	1	0	0	1	0	0	0	0	0	3	0.3	0	1 (2016)
164.	Water Pipit	1	4	9	7	10	0	0	0	3	0	34	3.4	0	10 (2020)
165.	Rock Pipit	1	10	6	1	1	2	0	0	0	0	21	2.1	0	10 (2017)
166.	Rock Pipit/Water Pipit	22	25	30	12	13	0	0	1	0	0	103	10	0	30 (2018)
167.	pipit sp.	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
168.	Chaffinch	3575	32512	12486	13395	24714	9521	6528	1574	5121	0	109426	10943	0	32512 (2017)
169.	Brambling	46	588	491	190	255	1139	24	53	24	0	2810	281	0	1139 (2021)
170.	Hawfinch	1	80	3	13	4	3	0	0	15	4	123	12	0	80 (2017)
171.	Bullfinch	0	5	0	0	0	0	0	1	2	0	8	0.8	0	5 (2017)
172.	Northern Bullfinch (trumpet call)	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
173.	Greenfinch	77	332	190	182	252	79	27	98	45	0	1282	128	0	332 (2017)
174.	Linnet	206	652	451	256	381	147	223	200	10	0	2526	253	0	652 (2017)
175.	Mealy Redpoll	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
176.	Lesser Redpoll	0	0	0	0	3	0	0	0	0	0	3	0.3	0	3 (2020)
177.	redpoll sp.	0	164	55	4	33	0	1	0	0	0	257	26	0	164 (2017)
178.	Crossbill	15	43	1	13	4	10	0	25	0	0	111	11	0	43 (2017)
179.	Goldfinch	19	224	57	178	336	84	127	104	87	0	1216	122	27	336 (2020)
180.	Serin	0	1	0	2	0	0	0	2	0	0	5	0.5	0	2 (2019)
181.	Siskin	100	848	376	6900	1331	1415	393	1544	430	0	13337	1334	0	6900 (2019)
182.	Lapland Bunting	0	2	0	0	0	0	0	0	0	0	2	0.2	0	2 (2017)
183.	Corn Bunting	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
184.	Yellowhammer	0	1	1	0	0	0	0	1	0	0	3	0.3	0	1 (2017)
185.	Ortolan Bunting	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
186.	Little Bunting	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
187.	Reed Bunting	80	244	241	210	155	54	71	31	69	0	1155	116	0	244 (2017)
188.	bunting sp.	2	0	0	2	0	0	1	0	0	0	5	0.5	0	2 (2016)
189.	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	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	12	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	1.2	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	1.2	0	10 (2016)
9.	white sp. (butterfly)	2	1	0	1	51	2	0	13	340	0	410	41	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	41	0	287 (2024)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
12.	Painted Lady	1	0	0	1	0	0	0	0	2	0	4	0.4	0	2 (2024)
	Other species
1.	Darter unknown	0	0	648	49	22	7	38	7	119	0	890	89	0	648 (2018)
2.	Migrant Hawker	0	0	2	1	1	0	0	0	1	0	5	0.5	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	6.2	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	4158	813820	81382	2729
	Observation hours	79:45	141:20	175:32	155:37	153:55	64:42	67:25	85:50	77:23	16:30	1,017:59	101:48

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Totals Slikken van de Heen 2016 - 2025