Select until 24 April

Totals Berkheide (Katwijk) 2016 - 2025

	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
1.	Dark-bellied Brent Goose	166	79	239	149	174	527	331	108	23	50	1846	185	1	527 (2021)
2.	Canada Goose	31	144	199	376	358	194	182	200	139	114	1937	194	2	376 (2019)
3.	Barnacle Goose	1234	2761	8796	4813	10434	5775	3836	4700	6674	3802	52825	5283	0	10434 (2020)
4.	Lesser Canada Goose	0	0	0	1	0	0	1	0	0	0	2	0.2	0	1 (2019)
5.	Bar-headed Goose	0	0	0	0	2	0	0	0	0	0	2	0.2	0	2 (2020)
6.	Greylag Goose	678	809	1013	1585	1069	465	1012	783	1227	562	9203	920	4	1585 (2019)
7.	Anser sp.	171	121	0	0	0	0	0	0	0	0	292	29	0	171 (2016)
8.	goose sp.	1211	26	225	1172	334	10791	138	241	4729	2519	21386	2139	0	10791 (2021)
9.	Domestic Goose	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
10.	Pink-footed Goose	197	11	31	590	190	3442	6	0	149	7	4623	462	0	3442 (2021)
11.	Tundra Bean Goose	13	28	0	0	4	93	500	1	1	3	643	64	0	500 (2022)
12.	Bean Goose sp.	3	0	0	0	0	0	0	0	0	0	3	0.3	0	3 (2016)
13.	Eurasian White-fronted Goose	155	606	390	656	378	1541	1829	399	682	9	6645	665	0	1829 (2022)
14.	Lesser White-fronted Goose	0	0	0	0	0	0	0	0	2	0	2	0.2	0	2 (2024)
15.	Black Swan	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
16.	Mute Swan	163	100	72	184	215	162	90	63	82	4	1135	114	11	215 (2020)
17.	Bewick's Swan	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
18.	Whooper Swan	0	0	6	0	2	32	0	0	0	0	40	4	0	32 (2021)
19.	Egyptian Goose	138	128	91	213	339	219	310	201	416	267	2322	232	9	416 (2024)
20.	Shelduck	252	255	435	744	384	253	246	334	173	77	3153	315	12	744 (2019)
21.	Ruddy Shelduck	1	15	0	12	2	0	2	2	1	0	35	3.5	0	15 (2017)
22.	Garganey	0	5	4	0	7	6	5	0	1	0	28	2.8	0	7 (2020)
23.	Shoveler	120	274	175	243	520	320	500	65	232	455	2904	290	0	520 (2020)
24.	Gadwall	41	99	52	78	105	60	68	77	42	13	635	64	0	105 (2020)
25.	Wigeon	337	100	1272	539	230	490	398	17	93	44	3520	352	37	1272 (2018)
26.	American Wigeon	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
27.	Mallard	14	58	46	60	81	17	23	45	22	5	371	37	0	81 (2020)
28.	Pintail	81	314	23	21	45	165	65	28	222	17	981	98	0	314 (2017)
29.	Teal	634	31	81	78	51	141	62	2	6	31	1117	112	0	634 (2016)
30.	duck sp.	54	71	38	0	19	4	6	5	17	0	214	21	0	71 (2017)
31.	Red-crested Pochard	18	7	24	11	0	5	14	14	7	9	109	11	3	24 (2018)
32.	Pochard	26	48	29	25	7	23	54	22	40	1	275	28	0	54 (2022)
33.	Ring-necked Duck	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
34.	Tufted Duck	19	35	14	6	45	24	35	18	7	0	203	20	0	45 (2020)
35.	Scaup	9	0	1	0	0	30	0	0	0	0	40	4	0	30 (2021)
36.	Aythya sp.	58	0	0	0	0	0	0	0	0	0	58	5.8	0	58 (2016)
37.	King Eider	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
38.	Eider	73	51	81	102	142	82	118	54	72	51	826	83	0	142 (2020)
39.	Velvet Scoter	3	5	5	0	2	2	0	0	15	0	32	3.2	0	15 (2024)
40.	Common Scoter	618	2210	1119	500	674	1720	534	346	1560	103	9384	938	87	2210 (2017)
41.	scoter sp.	2	9	0	0	0	0	0	0	0	0	11	1.1	0	9 (2017)
42.	Long-tailed Duck	0	0	0	0	0	1	0	0	1	0	2	0.2	0	1 (2021)
43.	Goldeneye	1	8	0	2	6	2	0	0	0	4	23	2.3	0	8 (2017)
44.	Smew	0	0	3	0	0	24	0	0	0	0	27	2.7	0	24 (2021)
45.	Goosander	3	8	28	21	14	17	3	9	26	15	144	14	0	28 (2018)
46.	Red-breasted Merganser	67	59	82	31	97	78	48	37	19	19	537	54	0	97 (2020)
47.	Alpine Swift	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
48.	Swift	1934	11043	6648	9961	16739	3970	4900	16824	3283	3	75305	7531	780	16824 (2023)
49.	Cuckoo	23	11	14	9	9	5	3	20	12	0	106	11	15	23 (2016)
50.	Stock Dove	137	152	185	215	246	96	387	128	166	67	1779	178	75	387 (2022)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
51.	Woodpigeon	3163	1668	5163	1739	2989	2260	5579	4114	2131	4335	33141	3314	251	5579 (2022)
52.	Turtle Dove	3	1	2	4	3	1	3	2	3	0	22	2.2	0	4 (2019)
53.	Collared Dove	100	118	161	121	144	69	104	139	98	14	1068	107	14	161 (2018)
54.	Crane	0	0	17	0	0	0	3	0	72	0	92	9.2	0	72 (2024)
55.	Great Crested Grebe	148	20	69	150	50	135	355	10	14	9	960	96	243	355 (2022)
56.	Greater Flamingo	0	0	0	0	0	0	0	2	0	0	2	0.2	0	2 (2023)
57.	Oystercatcher	420	327	735	318	429	433	413	665	391	111	4242	424	6	735 (2018)
58.	Avocet	18	10	27	1	86	14	146	2	25	45	374	37	0	146 (2022)
59.	Grey Plover	29	139	14	16	15	175	12	128	58	4	590	59	0	175 (2021)
60.	Golden Plover	10	87	250	21	31	57	55	21	6	20	558	56	0	250 (2018)
61.	Dotterel	1	5	1	22	2	0	5	0	0	0	36	3.6	0	22 (2019)
62.	Ringed Plover	20	44	103	200	59	18	20	108	101	6	679	68	0	200 (2019)
63.	Charadrius h. tundrae	0	0	0	0	0	0	0	12	0	0	12	1.2	0	12 (2023)
64.	Little Ringed Plover	15	18	27	15	22	18	37	33	8	27	220	22	12	37 (2022)
65.	Lapwing	241	110	1154	90	94	256	182	151	111	62	2451	245	45	1154 (2018)
66.	Whimbrel	159	284	403	397	1486	633	251	348	138	320	4419	442	0	1486 (2020)
67.	Curlew	110	86	105	276	168	75	119	104	22	59	1124	112	1	276 (2019)
68.	Bar-tailed Godwit	41	62	22	13	36	121	83	22	9	2	411	41	0	121 (2021)
69.	Black-tailed Godwit	12	24	41	21	20	1	66	14	30	1	230	23	0	66 (2022)
70.	Icelandic Black-tailed Godwit	0	0	1	0	0	1	0	0	0	0	2	0.2	0	1 (2018)
71.	Jack Snipe	1	0	0	1	0	0	1	0	0	0	3	0.3	0	1 (2016)
72.	Woodcock	3	2	0	1	1	2	1	0	0	0	10	1	0	3 (2016)
73.	Snipe	19	39	58	54	60	32	68	7	42	112	491	49	0	112 (2025)
74.	Common Sandpiper	0	0	1	3	0	2	0	1	0	0	7	0.7	0	3 (2019)
75.	Green Sandpiper	14	91	53	119	210	83	144	84	17	210	1025	103	1	210 (2020)
76.	Wood Sandpiper	3	4	15	7	13	3	13	4	1	1	64	6.4	0	15 (2018)
77.	Redshank	28	165	58	107	199	37	198	94	61	72	1019	102	0	199 (2020)
78.	Spotted Redshank	1	7	6	8	3	1	11	1	2	0	40	4	0	11 (2022)
79.	Greenshank	36	151	29	49	66	35	147	65	23	7	608	61	0	151 (2017)
80.	Turnstone	2	3	1	0	1	0	0	4	0	0	11	1.1	0	4 (2023)
81.	Knot	29	28	19	43	78	14	61	1	1	0	274	27	0	78 (2020)
82.	Ruff	12	67	68	0	58	1	61	23	60	24	374	37	0	68 (2018)
83.	wader sp.	33	82	50	18	137	192	11	27	54	43	647	65	0	192 (2021)
84.	small wader	0	0	0	0	0	0	0	0	2	0	2	0.2	0	2 (2024)
85.	large wader	0	0	0	0	0	0	0	0	6	0	6	0.6	0	6 (2024)
86.	Temminck's Stint	0	6	0	0	0	0	0	0	0	0	6	0.6	0	6 (2017)
87.	Sanderling	53	82	0	15	67	48	0	0	1	0	266	27	31	82 (2017)
88.	Dunlin	317	26	24	131	33	137	704	9	10	9	1400	140	0	704 (2022)
89.	Purple Sandpiper	3	0	0	0	0	0	0	0	0	0	3	0.3	0	3 (2016)
90.	Little Stint	0	6	0	0	0	0	0	0	0	0	6	0.6	0	6 (2017)
91.	Little / Temminck's Stint	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
92.	Calidris sp.	0	53	0	3	13	28	3	3	13	0	116	12	0	53 (2017)
93.	Little Tern	50	33	21	18	78	14	9	8	5	0	236	24	0	78 (2020)
94.	Gull-billed Tern	0	2	2	0	2	1	0	0	3	0	10	1	0	3 (2024)
95.	Caspian Tern	0	0	0	0	0	1	1	6	3	4	15	1.5	0	6 (2023)
96.	Black Tern	11	42	0	24	237	8	12	10	14	1	359	36	0	237 (2020)
97.	Arctic Tern	11	0	4	30	32	45	0	0	0	0	122	12	0	45 (2021)
98.	Common/Arctic Tern	13	895	0	112	403	156	71	297	230	0	2177	218	10	895 (2017)
99.	Common Tern	558	344	349	585	7741	985	291	543	506	126	12028	1203	49	7741 (2020)
100.	sterna sp.	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
101.	Sandwich Tern	200	705	321	667	994	404	134	142	105	70	3742	374	45	994 (2020)
102.	Little Gull	317	51	130	924	1911	5638	469	781	103	86	10410	1041	89	5638 (2021)
103.	Kittiwake	2	3	2	0	0	4	1	0	0	0	12	1.2	0	4 (2021)
104.	Black-headed Gull	7439	3659	4060	2184	3657	2563	3578	4882	614	1221	33857	3386	51	7439 (2016)
105.	Mediterranean Gull	5	13	58	23	150	24	12	66	18	52	421	42	0	150 (2020)
106.	Common Gull	1860	1380	520	317	1343	403	700	850	1075	2960	11408	1141	77	2960 (2025)
107.	Caspian Gull	0	0	0	0	0	0	0	2	1	0	3	0.3	0	2 (2023)
108.	Herring Gull	1527	2013	813	876	2121	779	256	1225	178	1042	10830	1083	672	2121 (2020)
109.	Yellow-legged Gull	0	1	0	0	0	0	1	0	0	0	2	0.2	1	1 (2017)
110.	Great Black-backed Gull	109	98	24	42	107	57	10	10	8	9	474	47	35	109 (2016)
111.	Glaucous Gull	0	2	1	1	0	0	0	1	0	0	5	0.5	0	2 (2017)
112.	Lesser Black-backed Gull	3786	2192	3306	2902	8465	1633	2326	5057	1803	3479	34949	3495	200	8465 (2020)
113.	Iceland Gull	0	2	0	1	1	0	2	0	0	0	6	0.6	0	2 (2017)
114.	Arctic Skua	0	0	0	3	1	2	1	0	0	0	7	0.7	0	3 (2019)
115.	Great Skua	0	1	0	0	0	0	0	0	0	0	1	0.1	0	1 (2017)
116.	Razorbill	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
117.	Razorbill/Guillemot	19	26	196	316	21	554	95	0	82	0	1309	131	1	554 (2021)
118.	Guillemot	0	1	0	0	0	5	0	0	0	0	6	0.6	1	5 (2021)
119.	Red-throated Diver	475	224	135	142	110	1544	119	34	214	10	3007	301	19	1544 (2021)
120.	Black-throated Diver	2	0	2	0	0	1	1	0	0	0	6	0.6	0	2 (2016)
121.	Great Northern Diver	1	0	0	0	0	1	1	0	0	0	3	0.3	0	1 (2016)
122.	diver sp.	2	1	2	0	2	2	0	0	3	1	13	1.3	0	3 (2024)
123.	Fulmar	1	0	0	0	1	1	0	0	0	0	3	0.3	0	1 (2016)
124.	Black Stork	4	3	0	0	0	0	0	0	0	0	7	0.7	0	4 (2016)
125.	White Stork	5	12	5	13	5	0	4	5	6	10	65	6.5	1	13 (2019)
126.	Gannet	110	41	130	23	51	405	20	7	28	51	866	87	23	405 (2021)
127.	Cormorant	2102	4033	3938	7471	6846	2876	4801	2624	2256	1717	38664	3866	276	7471 (2019)
128.	Cormorant (p. c. carbo)	0	0	1	0	0	0	0	0	0	0	1	0.1	0	1 (2018)
129.	Spoonbill	105	346	461	378	399	418	383	275	230	333	3328	333	1	461 (2018)
130.	Bittern	0	0	0	0	2	0	0	0	3	0	5	0.5	0	3 (2024)
131.	Night Heron	0	2	0	0	0	2	0	0	0	0	4	0.4	0	2 (2017)
132.	Little Egret	0	3	1	4	2	2	2	3	4	0	21	2.1	0	4 (2019)
133.	Egretta sp.	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
134.	Cattle Egret	0	0	0	1	0	1	2	1	1	0	6	0.6	0	2 (2022)
135.	Great White Egret	13	6	32	46	51	35	81	36	49	24	373	37	2	81 (2022)
136.	heron sp.	1	1	0	0	1	0	0	0	0	0	3	0.3	0	1 (2016)
137.	Grey Heron	168	249	412	369	458	155	369	243	290	323	3036	304	12	458 (2020)
138.	Purple Heron	6	6	18	12	13	6	19	13	13	1	107	11	0	19 (2022)
139.	Osprey	10	2	7	7	8	6	0	8	2	2	52	5.2	0	10 (2016)
140.	Honey Buzzard	2	5	4	0	2	1	2	0	5	0	21	2.1	0	5 (2017)
141.	Booted Eagle	0	0	0	0	2	0	0	0	0	0	2	0.2	0	2 (2020)
142.	Sparrowhawk	41	30	33	59	40	25	20	36	17	24	325	33	6	59 (2019)
143.	Goshawk	4	10	4	4	3	3	2	4	1	2	37	3.7	10	10 (2017)
144.	Marsh Harrier	43	101	102	93	133	81	84	63	81	62	843	84	4	133 (2020)
145.	Hen Harrier	5	2	2	7	11	5	3	4	7	8	54	5.4	1	11 (2020)
146.	Pallid Harrier	1	1	1	0	2	0	1	1	2	0	9	0.9	0	2 (2020)
147.	Montagu's Harrier	1	0	0	1	0	0	0	1	0	0	3	0.3	0	1 (2016)
148.	Montagu's/Pallid Harrier	0	1	0	0	0	1	0	0	0	0	2	0.2	0	1 (2017)
149.	Red Kite	1	1	3	0	1	2	2	2	2	1	15	1.5	0	3 (2018)
150.	Black Kite	2	1	1	4	3	3	2	3	0	0	19	1.9	0	4 (2019)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
151.	White-tailed Eagle	1	0	2	1	3	0	0	0	0	0	7	0.7	0	3 (2020)
152.	Rough-legged Buzzard	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
153.	Common Buzzard	39	7	11	20	22	5	5	21	16	6	152	15	51	39 (2016)
154.	Short-eared Owl	3	0	2	0	3	1	1	0	0	2	12	1.2	0	3 (2016)
155.	Hoopoe	1	0	0	1	0	1	0	0	0	0	3	0.3	0	1 (2016)
156.	Kingfisher	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
157.	European Bee-eater	2	3	3	1	0	1	4	2	4	0	20	2	0	4 (2022)
158.	Lesser Spotted Woodpecker	0	2	0	2	1	0	0	0	0	0	5	0.5	0	2 (2017)
159.	Great Spotted Woodpecker	35	133	57	92	53	43	31	32	32	16	524	52	46	133 (2017)
160.	Green Woodpecker	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
161.	Kestrel	38	35	23	41	47	22	35	39	18	81	379	38	24	81 (2025)
162.	falcon sp.	0	0	1	0	0	0	0	1	0	0	2	0.2	0	1 (2018)
163.	Red-footed Falcon	7	3	0	0	1	0	0	2	0	0	13	1.3	1	7 (2016)
164.	Merlin	5	4	7	12	19	9	8	7	6	9	86	8.6	0	19 (2020)
165.	Hobby	9	5	8	13	9	4	6	7	10	2	73	7.3	1	13 (2019)
166.	Saker Falcon	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
167.	Peregrine	7	17	15	11	8	7	5	4	7	3	84	8.4	3	17 (2017)
168.	Rose-ringed Parakeet	0	0	0	5	4	0	0	4	1	0	14	1.4	0	5 (2019)
169.	Golden Oriole	5	6	13	4	11	15	5	21	13	0	93	9.3	0	21 (2023)
170.	Great Grey Shrike	1	0	0	1	0	0	0	0	0	0	2	0.2	0	1 (2016)
171.	Jay	31	13	4	203	15	20	59	5	2	2	354	35	8	203 (2019)
172.	Magpie	27	6	23	43	111	39	44	23	59	75	450	45	31	111 (2020)
173.	Jackdaw	1000	779	694	1947	601	1341	554	415	548	302	8181	818	15	1947 (2019)
174.	Rook	3	2	17	7	4	15	7	8	4	10	77	7.7	0	17 (2018)
175.	Carrion Crow	77	99	236	121	152	95	134	189	168	244	1515	152	91	244 (2025)
176.	Hooded Crow	0	0	2	0	0	1	2	0	1	0	6	0.6	0	2 (2018)
177.	Raven	2	4	1	3	2	0	3	5	2	0	22	2.2	0	5 (2023)
178.	Waxwing	2	0	0	0	0	0	0	0	5	0	7	0.7	0	5 (2024)
179.	Coal Tit	1	13	1	3	4	24	0	0	0	0	46	4.6	2	24 (2021)
180.	Crested Tit	0	0	0	0	0	0	0	0	3	0	3	0.3	0	3 (2024)
181.	Blue Tit	31	143	11	5542	52	171	22	10	7	11	6000	600	2	5542 (2019)
182.	Great Tit	49	85	51	104	37	90	11	25	7	4	463	46	7	104 (2019)
183.	Bearded Tit	0	0	0	0	0	5	0	0	0	0	5	0.5	0	5 (2021)
184.	Wood Lark	54	45	74	119	12	88	93	6	15	8	514	51	74	119 (2019)
185.	Skylark	291	144	391	1754	81	849	1021	11	47	28	4617	462	1	1754 (2019)
186.	Shore Lark	0	0	0	0	2	0	0	0	0	0	2	0.2	0	2 (2020)
187.	Sand Martin	332	406	146	918	935	535	323	505	233	508	4841	484	4	935 (2020)
188.	Swallow	3764	3490	3610	2903	2818	3882	1373	1907	1707	275	25729	2573	136	3882 (2021)
189.	House Martin	498	1022	573	569	372	394	245	408	409	4	4494	449	228	1022 (2017)
190.	Red-rumped Swallow	1	0	0	0	1	0	0	1	0	0	3	0.3	0	1 (2016)
191.	swallow sp.	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
192.	Long-tailed Tit	20	12	12	12	1	0	0	0	0	0	57	5.7	0	20 (2016)
193.	Wood Warbler	0	1	0	1	0	0	0	1	0	0	3	0.3	0	1 (2017)
194.	Willow Warbler	1	2	1	4	8	2	3	0	2	3	26	2.6	9	8 (2020)
195.	Chiffchaff	21	16	32	13	24	11	11	9	13	21	171	17	14	32 (2018)
196.	Chiffchaff/Willow Warbler	0	1	5	4	17	11	18	2	4	17	79	7.9	0	18 (2022)
197.	Phylloscopus sp.	0	0	0	0	1	0	1	0	0	0	2	0.2	0	1 (2020)
198.	Icterine Warbler	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
199.	Blackcap	3	0	0	6	7	6	1	1	0	0	24	2.4	2	7 (2020)
200.	Garden Warbler	0	0	1	0	0	0	0	1	0	0	2	0.2	0	1 (2018)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
201.	Lesser Whitethroat	0	0	0	1	1	1	0	2	1	0	6	0.6	0	2 (2023)
202.	Whitethroat	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
203.	Firecrest	1	0	0	6	1	5	0	1	0	0	14	1.4	0	6 (2019)
204.	Goldcrest	77	9	2	53	3	11	0	0	0	0	155	16	11	77 (2016)
205.	Nuthatch	0	1	0	3	1	1	0	0	0	0	6	0.6	0	3 (2019)
206.	Short-toed Tree Creeper	0	0	0	0	0	0	2	0	0	0	2	0.2	0	2 (2022)
207.	Crested Myna	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
208.	Rose-coloured Starling	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
209.	Starling	80364	162790	5744	78716	91072	147183	15202	36439	7706	1696	626912	62691	1489	162790 (2017)
210.	Purple Starling	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
211.	Song Thrush	704	279	732	2790	615	513	1915	107	34	7525	15214	1521	24	7525 (2025)
212.	Mistle Thrush	62	80	158	131	36	87	140	22	66	142	924	92	22	158 (2018)
213.	Redwing	1274	45	797	5269	306	34185	1054	7	538	516	43991	4399	3	34185 (2021)
214.	Blackbird	67	13	17	42	8	60	59	3	4	3	276	28	19	67 (2016)
215.	Fieldfare	5900	21	31	22901	123	317	311	5	10	3	29622	2962	25	22901 (2019)
216.	Ring Ouzel	16	22	145	296	262	98	211	92	37	100	1279	128	44	296 (2019)
217.	thrush sp.	5	5	0	0	0	0	0	0	14	0	24	2.4	0	14 (2024)
218.	Spotted Flycatcher	58	16	56	14	39	7	9	10	76	0	285	29	14	76 (2024)
219.	Pied Flycatcher	0	0	0	1	0	0	0	1	2	0	4	0.4	0	2 (2024)
220.	Black Redstart	0	0	1	2	1	1	0	0	0	0	5	0.5	0	2 (2019)
221.	Redstart	0	0	0	1	0	0	0	0	1	0	2	0.2	0	1 (2019)
222.	Rock Thrush	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
223.	Whinchat	3	1	0	2	0	1	0	1	3	0	11	1.1	0	3 (2016)
224.	Stonechat	0	1	0	0	0	1	1	1	0	0	4	0.4	3	1 (2017)
225.	Wheatear	15	3	15	37	40	11	5	10	8	4	148	15	2	40 (2020)
226.	Tree Sparrow	28	21	14	55	5	20	1	0	0	0	144	14	5	55 (2019)
227.	House Sparrow	23	28	22	43	57	10	7	1	0	1	192	19	12	57 (2020)
228.	Dunnock	38	79	44	106	27	51	33	12	24	8	422	42	33	106 (2019)
229.	Blue-headed Wagtail	152	39	288	336	419	20	32	196	11	105	1598	160	7	419 (2020)
230.	Yellow Wagtail (flavissima)	8	9	7	12	35	12	5	5	3	3	99	9.9	2	35 (2020)
231.	Grey-headed Wagtail	57	28	80	33	20	3	4	23	89	0	337	34	0	89 (2024)
232.	Yellow wagtail sp.	224	751	598	824	1304	735	635	372	432	285	6160	616	6	1304 (2020)
233.	Citrine Wagtail	0	1	1	1	0	0	0	0	0	0	3	0.3	0	1 (2017)
234.	Grey Wagtail	12	37	14	103	34	38	17	5	19	13	292	29	0	103 (2019)
235.	White Wagtail	122	810	594	275	222	124	289	92	87	307	2922	292	28	810 (2017)
236.	alba wagtail sp.	92	339	372	243	614	107	383	193	353	233	2929	293	5	614 (2020)
237.	Motacilla (wagtail) sp.	0	0	0	0	0	0	0	0	0	2	2	0.2	0	2 (2025)
238.	Pied Wagtail	15	13	19	12	5	7	9	4	13	15	112	11	0	19 (2018)
239.	Richard's Pipit	0	0	0	1	2	1	2	0	0	0	6	0.6	0	2 (2020)
240.	Tawny Pipit	0	0	0	1	1	0	0	0	0	0	2	0.2	0	1 (2019)
241.	Meadow Pipit	2114	7403	6712	27484	14747	11625	4752	9118	1990	5401	91346	9135	81	27484 (2019)
242.	Tree Pipit	67	81	160	277	446	128	266	173	150	134	1882	188	4	446 (2020)
243.	Red-throated Pipit	0	1	0	0	0	0	1	0	0	0	2	0.2	0	1 (2017)
244.	Water Pipit	3	0	0	2	0	1	6	1	2	0	15	1.5	0	6 (2022)
245.	Rock Pipit	18	16	5	3	3	2	16	2	5	5	75	7.5	0	18 (2016)
246.	Rock Pipit/Water Pipit	4	1	7	14	8	4	11	6	3	5	63	6.3	0	14 (2019)
247.	pipit sp.	2	1	0	0	0	0	0	0	0	0	3	0.3	0	2 (2016)
248.	Chaffinch	4901	18338	1116	52507	12075	24804	6560	1404	1411	1812	124928	12493	1056	52507 (2019)
249.	Brambling	135	432	79	434	289	3542	590	382	173	27	6083	608	204	3542 (2021)
250.	Hawfinch	36	28	80	34	93	25	52	53	151	14	566	57	5	151 (2024)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
251.	Bullfinch	0	3	7	7	0	1	1	3	1	2	25	2.5	0	7 (2018)
252.	Common Rosefinch	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
253.	Greenfinch	192	202	339	320	214	98	114	52	49	37	1617	162	202	339 (2018)
254.	Linnet	355	1004	690	779	2239	643	461	481	369	326	7347	735	220	2239 (2020)
255.	Mealy Redpoll	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
256.	Lesser Redpoll	6	5	4	1	0	2	0	4	0	0	22	2.2	0	6 (2016)
257.	redpoll sp.	11	64	33	42	10	100	13	78	187	7	545	55	1	187 (2024)
258.	Crossbill	139	705	27	304	248	284	89	255	4	0	2055	206	39	705 (2017)
259.	Goldfinch	104	190	161	285	266	126	156	192	138	133	1751	175	109	285 (2019)
260.	Serin	5	3	3	2	2	5	0	1	0	0	21	2.1	0	5 (2016)
261.	Siskin	1265	771	258	10918	224	5157	321	68	425	59	19466	1947	125	10918 (2019)
262.	Lapland Bunting	2	2	2	3	10	1	1	0	0	0	21	2.1	0	10 (2020)
263.	Snow Bunting	2	1	16	1	0	0	0	0	0	0	20	2	0	16 (2018)
264.	Yellowhammer	0	0	1	2	1	2	2	0	1	2	11	1.1	0	2 (2019)
265.	Ortolan Bunting	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
266.	Little Bunting	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
267.	Reed Bunting	123	142	240	274	150	155	313	25	143	49	1614	161	10	313 (2022)
268.	bunting sp.	0	0	0	2	0	0	0	0	0	0	2	0.2	0	2 (2019)
269.	passerine sp.	0	0	0	0	2	0	1	0	0	0	3	0.3	0	2 (2020)
	Other species
1.	Harbour Porpoise	6	0	0	2	2	1	0	0	5	0	16	1.6	0	6 (2016)
2.	Grey seal	2	0	0	0	0	0	0	0	0	0	2	0.2	0	2 (2016)
3.	Common Seal	1	0	0	0	0	0	0	0	0	0	1	0.1	0	1 (2016)
	Other species
1.	Small Tortoiseshell	0	1	0	0	0	0	1	0	0	0	2	0.2	0	1 (2017)
2.	Brimstone	0	3	1	4	4	0	0	1	1	0	14	1.4	0	4 (2019)
3.	European Peacock	0	1	2	0	0	0	0	1	1	0	5	0.5	0	2 (2018)
4.	Large White	2	0	0	6	1	0	0	0	0	0	9	0.9	0	6 (2019)
5.	Green-veined White	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
6.	Small White	14	1	0	4	0	0	0	0	0	0	19	1.9	0	14 (2016)
7.	white sp. (butterfly)	22	0	0	3	1	0	0	0	0	0	26	2.6	0	22 (2016)
8.	Comma	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
9.	Red Admiral	6	37	0	4	6	1	1	2	0	0	57	5.7	0	37 (2017)
10.	Painted Lady	0	0	0	45	0	0	0	0	0	0	45	4.5	10	45 (2019)
11.	Small Heath	0	0	0	2	0	0	0	0	0	0	2	0.2	0	2 (2019)
	Other species
1.	Bumblebee sp.	9	59	14	10	46	5	5	6	18	5	177	18	0	59 (2017)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
	Totals	137968	241474	70936	264586	206689	292523	76537	101772	49719	45973	1488177	148818	7796
	Observation hours	194:17	272:45	304:23	312:34	291:43	220:32	208:10	217:32	171:33	103:09	2,296:38	229:40

Trektellen

Totals Berkheide (Katwijk) 2016 - 2025