Select until 30 January

Totals Katwijk - Savoy (zeetrek) 2016 - 2025

	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
1.	Dark-bellied Brent Goose	229	832	411	867	4070	1187	294	3093	398	0	11381	1265	5	4070 (2020)
2.	Pale-bellied Brent Goose	0	0	0	0	2	0	0	0	0	0	2	0.2	0	2 (2020)
3.	Black Brant	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
4.	Red-breasted Goose	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
5.	Canada Goose	0	18	0	16	19	8	17	32	5	0	115	13	0	32 (2023)
6.	Barnacle Goose	54	330	384	509	2816	2795	775	234	914	0	8811	979	0	2816 (2020)
7.	Greylag Goose	0	73	92	117	59	130	65	79	24	0	639	71	5	130 (2021)
8.	Anser sp.	0	0	215	54	280	0	0	0	0	0	549	61	0	280 (2020)
9.	goose sp.	0	0	262	500	360	67	94	60	69	0	1412	157	0	500 (2019)
10.	Pink-footed Goose	0	24	201	216	120	0	2	65	0	0	628	70	0	216 (2019)
11.	Tundra Bean Goose	0	0	61	23	55	6	0	0	0	0	145	16	0	61 (2018)
12.	Eurasian White-fronted Goose	0	1	79	220	47	19	130	88	0	0	584	65	0	220 (2019)
13.	Black Swan	0	0	0	0	0	0	2	0	0	0	2	0.2	0	2 (2022)
14.	Mute Swan	0	27	2	9	30	12	0	18	11	0	109	12	2	30 (2020)
15.	Bewick's Swan	0	0	3	0	0	0	0	0	0	0	3	0.3	0	3 (2018)
16.	Whooper Swan	0	0	1	0	0	0	0	0	0	0	1	0.1	2	1 (2018)
17.	swan sp.	0	0	2	0	0	0	0	0	0	0	2	0.2	0	2 (2018)
18.	Egyptian Goose	4	45	45	15	37	22	113	43	24	0	348	39	1	113 (2022)
19.	Shelduck	316	694	358	1183	1070	319	1081	1074	155	0	6250	694	7	1183 (2019)
20.	Mandarin	0	0	0	0	0	1	4	0	0	0	5	0.6	0	4 (2022)
21.	Garganey	1	12	0	0	6	2	13	3	7	0	44	4.9	0	13 (2022)
22.	Shoveler	3	376	23	78	514	121	99	45	23	0	1282	142	0	514 (2020)
23.	Gadwall	2	26	8	40	64	39	36	15	7	0	237	26	0	64 (2020)
24.	Wigeon	64	389	1451	1011	648	890	298	1425	188	0	6364	707	249	1451 (2018)
25.	Mallard	2	4	2	11	70	5	1	2	0	0	97	10.8	0	70 (2020)
26.	Pintail	17	71	42	21	75	29	65	54	52	0	426	47	1	75 (2020)
27.	Teal	62	421	331	197	645	504	265	354	149	0	2928	325	18	645 (2020)
28.	dabbling duck sp.	2	0	1200	0	0	0	4	0	0	0	1206	134	0	1200 (2018)
29.	duck sp.	2	22	79	4	24	68	27	94	6	0	326	36	0	94 (2023)
30.	Red-crested Pochard	0	1	0	0	0	0	1	0	0	0	2	0.2	0	1 (2017)
31.	Pochard	0	2	34	9	2	5	11	4	0	0	67	7.4	0	34 (2018)
32.	Tufted Duck	7	33	22	25	35	40	6	27	12	0	207	23	0	40 (2021)
33.	Scaup	0	1	1	4	19	28	13	3	7	0	76	8.4	0	28 (2021)
34.	Aythya sp.	0	0	0	20	4	1	0	0	0	0	25	2.8	0	20 (2019)
35.	Eider	16	129	103	160	193	169	124	124	100	0	1118	124	10	193 (2020)
36.	Velvet Scoter	5	54	38	133	42	47	44	59	18	0	440	49	4	133 (2019)
37.	Common Scoter	692	2131	1785	2705	4182	4907	3336	6832	3505	0	30075	3342	717	6832 (2023)
38.	Long-tailed Duck	0	2	1	4	1	1	0	0	0	0	9	1	0	4 (2019)
39.	Goldeneye	0	5	18	10	29	7	2	20	4	0	95	10.6	2	29 (2020)
40.	Smew	0	0	4	1	0	0	0	1	0	0	6	0.7	1	4 (2018)
41.	Goosander	0	5	25	4	9	9	0	1	0	0	53	5.9	0	25 (2018)
42.	Red-breasted Merganser	28	192	69	112	155	180	158	190	68	0	1152	128	7	192 (2017)
43.	Swift	2	111	0	1	3	19	0	42	0	0	178	20	0	111 (2017)
44.	Woodpigeon	0	0	0	2	4	0	2	412	0	0	420	47	0	412 (2023)
45.	Collared Dove	0	0	0	0	0	0	1	2	0	0	3	0.3	0	2 (2023)
46.	Red-necked Grebe	0	2	3	5	1	0	1	0	0	0	12	1.3	1	5 (2019)
47.	Great Crested Grebe	136	344	1707	1023	388	393	414	263	120	0	4788	532	1041	1707 (2018)
48.	Slavonian Grebe	0	2	2	1	1	0	0	0	0	0	6	0.7	0	2 (2017)
49.	Black-necked Grebe	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
50.	Black-necked / Slavonian Grebe	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
51.	grebe sp.	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
52.	Oystercatcher	28	249	95	160	255	297	216	256	115	0	1671	186	198	297 (2021)
53.	Avocet	0	1	1	7	131	2	34	6	0	0	182	20	0	131 (2020)
54.	Grey Plover	13	22	8	116	208	478	430	340	41	0	1656	184	1	478 (2021)
55.	Golden Plover	3	13	9	20	1	68	15	20	2	0	151	17	0	68 (2021)
56.	Dotterel	4	0	0	2	8	0	2	2	0	0	18	2	0	8 (2020)
57.	Ringed Plover	19	55	14	176	503	361	132	221	16	0	1497	166	4	503 (2020)
58.	Little Ringed Plover	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
59.	Lapwing	0	0	3	2	1	623	1	6	1	0	637	71	0	623 (2021)
60.	Whimbrel	25	159	33	223	1024	845	448	268	89	0	3114	346	6	1024 (2020)
61.	Curlew	18	36	21	62	81	41	30	46	48	0	383	43	0	81 (2020)
62.	Bar-tailed Godwit	304	31	15	80	650	518	1188	87	2149	0	5022	558	14	2149 (2024)
63.	Black-tailed Godwit	0	0	1	2	6	0	1	0	0	0	10	1.1	0	6 (2020)
64.	Woodcock	0	1	0	1	1	1	0	2	0	0	6	0.7	0	2 (2023)
65.	Snipe	1	9	1	4	0	39	17	1	0	0	72	8	0	39 (2021)
66.	Grey Phalarope	1	7	0	3	1	1	7	4	0	0	24	2.7	0	7 (2017)
67.	Common Sandpiper	15	7	0	0	0	13	0	1	0	0	36	4	20	15 (2016)
68.	Green Sandpiper	0	0	0	2	0	4	2	0	0	0	8	0.9	0	4 (2021)
69.	Wood Sandpiper	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
70.	Redshank	12	8	22	56	51	47	111	16	2	0	325	36	1	111 (2022)
71.	Spotted Redshank	0	0	0	1	0	1	1	2	0	0	5	0.6	0	2 (2023)
72.	Greenshank	0	1	0	3	2	16	39	5	1	0	67	7.4	0	39 (2022)
73.	Turnstone	31	39	6	110	53	81	15	46	15	0	396	44	5	110 (2019)
74.	Knot	6	17	23	129	74	90	192	63	27	0	621	69	1	192 (2022)
75.	Ruff	4	6	1	4	9	0	43	4	0	0	71	7.9	0	43 (2022)
76.	wader sp.	30	23	2	19	253	144	86	40	35	0	632	70	0	253 (2020)
77.	large wader	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
78.	Curlew Sandpiper	0	3	0	2	2	0	1	1	0	0	9	1	0	3 (2017)
79.	Sanderling	171	661	147	213	632	474	462	1099	155	0	4014	446	360	1099 (2023)
80.	Dunlin	25	375	112	271	670	582	632	867	50	0	3584	398	8	867 (2023)
81.	Purple Sandpiper	4	4	1	4	8	6	2	6	0	0	35	3.9	0	8 (2020)
82.	Little Stint	0	0	0	3	0	1	2	5	0	0	11	1.2	0	5 (2023)
83.	Little / Temminck's Stint	0	0	0	0	0	0	0	1	2	0	3	0.3	0	2 (2024)
84.	Calidris sp.	23	40	2	42	206	140	106	116	27	0	702	78	0	206 (2020)
85.	Little Tern	43	23	13	34	165	85	53	116	77	0	609	68	8	165 (2020)
86.	Gull-billed Tern	0	0	0	0	0	0	0	2	0	0	2	0.2	0	2 (2023)
87.	Caspian Tern	1	1	0	5	1	2	1	2	0	0	13	1.4	0	5 (2019)
88.	Black Tern	4	3	14	40	471	601	106	27	14	0	1280	142	5	601 (2021)
89.	White-winged Black Tern	0	0	0	0	2	0	0	0	0	0	2	0.2	0	2 (2020)
90.	Arctic Tern	14	9	5	20	35	41	33	112	60	0	329	37	0	112 (2023)
91.	Common/Arctic Tern	242	631	95	789	1838	2656	869	1989	814	0	9923	1103	0	2656 (2021)
92.	Common Tern	329	1333	355	2109	10438	5701	4616	4018	1625	0	30524	3392	923	10438 (2020)
93.	Sandwich Tern	836	844	1166	3777	2536	3427	2651	1786	1131	0	18154	2017	127	3777 (2019)
94.	Little Gull	46	117	82	232	3318	7054	3496	2381	161	0	16887	1876	57	7054 (2021)
95.	Kittiwake	406	420	2000	1164	2591	2343	756	4202	569	0	14451	1606	25	4202 (2023)
96.	Sabine's Gull	0	3	1	2	2	0	2	3	1	0	14	1.6	0	3 (2017)
97.	Black-headed Gull	2949	7153	3561	6808	8030	15294	2680	3773	617	0	50865	5652	2066	15294 (2021)
98.	Mediterranean Gull	18	19	9	50	22	222	39	33	7	0	419	47	9	222 (2021)
99.	Common Gull	205	2629	844	2454	3689	2446	1202	3499	352	0	17320	1924	511	3689 (2020)
100.	Caspian Gull	0	0	0	0	2	1	0	0	3	0	6	0.7	1	3 (2024)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
101.	Herring Gull	654	1143	894	700	1355	252	165	251	27	0	5441	605	860	1355 (2020)
102.	Yellow-legged Gull	1	1	1	0	0	1	0	0	0	0	4	0.4	0	1 (2016)
103.	Great Black-backed Gull	60	302	305	324	624	174	102	158	41	0	2090	232	110	624 (2020)
104.	Glaucous Gull	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
105.	Lesser Black-backed Gull	5696	1305	2429	3114	3348	578	574	3021	708	0	20773	2308	1697	5696 (2016)
106.	Iceland Gull	0	0	1	0	0	0	2	1	0	0	4	0.4	0	2 (2022)
107.	Long-tailed Skua	2	1	1	1	8	3	4	7	3	0	30	3.3	0	8 (2020)
108.	skua sp.	7	24	15	30	12	35	25	21	10	0	179	20	1	35 (2021)
109.	Arctic Skua	5	63	31	109	16	121	67	125	13	0	550	61	4	125 (2023)
110.	S. parasiticus / pomarinus	0	0	1	0	0	0	0	0	1	0	2	0.2	0	1 (2018)
111.	Pomarine Skua	5	19	17	20	3	8	6	5	0	0	83	9.2	0	20 (2019)
112.	Great Skua	11	67	31	30	10	4	5	4	6	0	168	19	0	67 (2017)
113.	Puffin	0	2	1	0	0	1	0	0	1	0	5	0.6	0	2 (2017)
114.	Razorbill	0	3	8	22	84	14	2	373	2	0	508	56	23	373 (2023)
115.	Razorbill/Guillemot	890	341	2651	6065	3141	5048	12477	2627	241	0	33481	3720	36	12477 (2022)
116.	Little Auk	4	1	1	4	0	0	4	1	0	0	15	1.7	1	4 (2016)
117.	Guillemot	26	50	1562	1275	1333	532	2255	64	56	0	7153	795	38	2255 (2022)
118.	Red-throated Diver	436	231	7066	5546	3933	4417	3099	2504	690	0	27922	3102	66	7066 (2018)
119.	Black-throated Diver	2	7	6	4	6	9	6	11	2	0	53	5.9	2	11 (2023)
120.	Great Northern Diver	2	1	3	3	0	0	2	3	0	0	14	1.6	0	3 (2018)
121.	diver sp.	4	24	34	4	10	33	17	9	12	0	147	16	0	34 (2018)
122.	Storm Petrel	0	0	0	0	0	1	0	1	0	0	2	0.2	0	1 (2021)
123.	storm-petrel sp.	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
124.	Leach's Petrel	2	30	40	4	2	3	3	2	0	0	86	9.6	0	40 (2018)
125.	Fulmar	1	2	10	3	3	62	4	0	18	0	103	11	0	62 (2021)
126.	Sooty Shearwater	19	17	13	3	10	15	29	22	6	0	134	15	0	29 (2022)
127.	Manx Shearwater	1	25	19	6	2	1	0	10	2	0	66	7.3	0	25 (2017)
128.	Balearic Shearwater	0	1	0	1	0	1	0	1	0	0	4	0.4	0	1 (2017)
129.	shearwater sp.	1	1	4	1	0	2	0	3	0	0	12	1.3	0	4 (2018)
130.	Gannet	361	539	525	583	537	603	825	5072	365	0	9410	1046	19	5072 (2023)
131.	Cormorant	920	3246	4006	9191	4590	4534	4508	3490	1682	0	36167	4019	529	9191 (2019)
132.	Shag	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
133.	Spoonbill	120	23	31	2	66	93	55	10	1	0	401	45	0	120 (2016)
134.	Little Egret	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
135.	Great White Egret	0	0	1	0	0	3	9	0	0	0	13	1.4	0	9 (2022)
136.	Grey Heron	3	2	1	17	38	18	18	20	35	0	152	17	5	38 (2020)
137.	Purple Heron	0	0	0	3	0	0	5	0	0	0	8	0.9	0	5 (2022)
138.	Osprey	0	2	0	0	0	0	1	0	0	0	3	0.3	0	2 (2017)
139.	Sparrowhawk	0	7	2	1	1	1	1	2	1	0	16	1.8	0	7 (2017)
140.	Marsh Harrier	1	1	0	0	13	2	2	1	1	0	21	2.3	0	13 (2020)
141.	Hen Harrier	0	1	1	1	2	3	0	2	0	0	10	1.1	0	3 (2021)
142.	Red Kite	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
143.	White-tailed Eagle	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
144.	Common Buzzard	0	0	0	0	3	2	0	0	0	0	5	0.6	0	3 (2020)
145.	Short-eared Owl	0	0	0	1	0	0	0	1	0	0	2	0.2	0	1 (2019)
146.	Kingfisher	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
147.	Great Spotted Woodpecker	0	1	0	0	0	0	1	1	0	0	3	0.3	0	1 (2017)
148.	Kestrel	2	8	1	7	8	2	0	1	1	0	30	3.3	1	8 (2017)
149.	Merlin	2	5	2	3	8	3	3	5	1	0	32	3.6	0	8 (2020)
150.	Hobby	2	2	1	0	0	0	0	7	0	0	12	1.3	0	7 (2023)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
151.	Peregrine	3	9	2	9	2	3	3	4	0	0	35	3.9	1	9 (2017)
152.	Rose-ringed Parakeet	0	0	4	0	0	0	0	0	0	0	4	0.4	0	4 (2018)
153.	Jay	0	0	0	18	0	0	0	0	0	0	18	2	0	18 (2019)
154.	Magpie	0	1	0	0	0	0	6	0	0	0	7	0.8	0	6 (2022)
155.	Jackdaw	0	0	0	100	10	0	202	0	0	0	312	35	14	202 (2022)
156.	Rook	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
157.	Carrion Crow	0	0	0	0	1	0	1	0	1	0	3	0.3	2	1 (2020)
158.	Blue Tit	0	0	0	0	0	0	14	0	0	0	14	1.6	0	14 (2022)
159.	Great Tit	0	0	0	0	0	0	3	0	0	0	3	0.3	0	3 (2022)
160.	Wood Lark	0	0	0	2	1	2	0	8	0	0	13	1.4	0	8 (2023)
161.	Skylark	12	215	10	26	133	96	8	79	15	0	594	66	0	215 (2017)
162.	Shore Lark	0	11	0	1	2	6	0	0	0	0	20	2.2	0	11 (2017)
163.	Sand Martin	0	3	0	1	31	12	5	0	2	0	54	6	0	31 (2020)
164.	Swallow	69	106	39	82	165	89	174	30	12	0	766	85	15	174 (2022)
165.	House Martin	12	18	3	45	4	15	1	2	0	0	100	11.1	0	45 (2019)
166.	Chiffchaff/Willow Warbler	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
167.	Starling	240	75921	997	8546	44706	6999	8800	88052	186	0	234447	26050	91	88052 (2023)
168.	Song Thrush	2	1	0	36	4	5	10	6	0	0	64	7.1	0	36 (2019)
169.	Mistle Thrush	0	0	0	0	0	0	0	2	0	0	2	0.2	0	2 (2023)
170.	Redwing	0	504	1	11	2	255	0	6	0	0	779	87	0	504 (2017)
171.	Blackbird	0	3	0	1	0	2	4	1	0	0	11	1.2	0	4 (2022)
172.	Fieldfare	0	1521	0	1	141	45	0	29	0	0	1737	193	0	1521 (2017)
173.	Whinchat	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
174.	Stonechat	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
175.	Wheatear	0	2	0	0	7	0	1	1	1	0	12	1.3	0	7 (2020)
176.	Tree Sparrow	0	0	0	1	0	0	0	1	0	0	2	0.2	0	1 (2019)
177.	Dunnock	0	0	0	0	0	0	0	5	0	0	5	0.6	0	5 (2023)
178.	Blue-headed Wagtail	26	0	1	6	76	0	4	1	2	0	116	13	0	76 (2020)
179.	Yellow Wagtail (flavissima)	0	0	0	0	1	0	1	0	0	0	2	0.2	0	1 (2020)
180.	Grey-headed Wagtail	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
181.	Yellow wagtail sp.	25	4	6	54	15	53	69	13	6	0	245	27	0	69 (2022)
182.	Grey Wagtail	4	8	2	45	18	7	4	37	3	0	128	14	0	45 (2019)
183.	White Wagtail	11	24	34	20	19	11	19	7	3	0	148	16	4	34 (2018)
184.	alba wagtail sp.	1	8	1	77	38	13	29	58	11	0	236	26	0	77 (2019)
185.	Pied Wagtail	0	1	0	0	0	0	0	0	1	0	2	0.2	0	1 (2017)
186.	Richard's Pipit	0	1	0	1	0	0	0	0	0	0	2	0.2	0	1 (2017)
187.	Meadow Pipit	415	533	245	1290	551	416	647	2519	389	0	7005	778	35	2519 (2023)
188.	Tree Pipit	0	0	0	4	1	3	3	2	0	0	13	1.4	0	4 (2019)
189.	Rock Pipit	3	26	3	8	3	10	4	4	0	0	61	6.8	3	26 (2017)
190.	Rock Pipit/Water Pipit	0	0	0	2	2	0	0	0	1	0	5	0.6	0	2 (2019)
191.	Chaffinch	0	819	19	2565	6065	6	2143	8245	0	0	19862	2207	0	8245 (2023)
192.	Brambling	0	31	0	6	14	0	3	15	0	0	69	7.7	0	31 (2017)
193.	Greenfinch	0	12	5	12	16	0	4	21	0	0	70	7.8	0	21 (2023)
194.	Twite	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
195.	Linnet	23	37	4	41	53	46	27	136	7	0	374	42	4	136 (2023)
196.	Mealy Redpoll	0	0	30	0	0	0	0	1	0	0	31	3.4	0	30 (2018)
197.	redpoll sp.	0	1	1	1	1	1	0	15	0	0	20	2.2	0	15 (2023)
198.	Crossbill	0	1	0	5	8	0	0	12	0	0	26	2.9	0	12 (2023)
199.	Goldfinch	1	20	14	1	50	5	1	16	0	0	108	12	0	50 (2020)
200.	Siskin	0	1	11	15614	265	1	320	2862	1	0	19075	2119	0	15614 (2019)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
201.	Lapland Bunting	3	0	0	1	1	1	0	1	0	0	7	0.8	0	3 (2016)
202.	Snow Bunting	0	6	0	1	4	3	1	2	0	0	17	1.9	5	6 (2017)
203.	Yellowhammer	0	4	0	3	0	0	0	3	0	0	10	1.1	0	4 (2017)
204.	Reed Bunting	3	1	2	13	17	0	10	29	0	0	75	8.3	0	29 (2023)
205.	bunting sp.	0	0	2	0	0	0	0	0	0	0	2	0.2	0	2 (2018)
206.	passerine sp.	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
	Other species
1.	Harbour Porpoise	6	11	35	70	59	31	26	33	9	0	280	31	2	70 (2019)
2.	dolphin sp.	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
3.	Grey seal	3	1	0	0	1	1	3	0	0	0	9	1	0	3 (2016)
4.	Common Seal	0	2	0	1	0	1	0	1	0	0	5	0.6	0	2 (2017)
5.	Common / Grey seal	0	0	0	0	0	1	0	1	0	0	2	0.2	0	1 (2021)
6.	Common Noctule	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
	Totals	17577	108697	38914	84311	125706	81497	65047	160333	18651	0	700733	77859	9991
	Observation hours	70:50	182:43	145:16	249:05	195:57	178:22	167:07	159:39	74:15		1,423:14	158:08

Trektellen

Totals Katwijk - Savoy (zeetrek) 2016 - 2025