Select until 20 May

Totals De Gorzen (Ridderkerk) 2016 - 2025

	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
1.	Dark-bellied Brent Goose	0	0	0	0	0	0	0	7	0	0	7	0.7	0	7 (2023)
2.	Canada Goose	0	2	0	99	8	115	52	9	16	6	307	31	0	115 (2021)
3.	Barnacle Goose	10	3807	1386	2403	13566	19570	8498	1834	10466	3624	65164	6516	0	19570 (2021)
4.	Lesser Canada Goose	0	0	0	0	0	0	0	0	2	1	3	0.3	0	2 (2024)
5.	Greylag Goose	126	519	1015	1190	1203	989	804	223	794	271	7134	713	0	1203 (2020)
6.	goose sp.	0	0	0	0	128	0	30	0	0	0	158	16	0	128 (2020)
7.	Domestic Goose	0	0	0	1	0	0	0	0	0	1	2	0.2	0	1 (2019)
8.	Pink-footed Goose	0	0	0	1	12	7	2	62	0	0	84	8.4	0	62 (2023)
9.	Tundra Bean Goose	0	8	38	97	191	1338	55	116	1484	1	3328	333	0	1484 (2024)
10.	Eurasian White-fronted Goose	18	1059	760	2159	5649	3701	2158	688	4024	68	20284	2028	0	5649 (2020)
11.	Lesser White-fronted Goose	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
12.	Black Swan	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
13.	Mute Swan	0	13	24	34	91	138	16	21	45	55	437	44	0	138 (2021)
14.	Bewick's Swan	0	7	20	0	0	59	0	2	1	0	89	8.9	0	59 (2021)
15.	Whooper Swan	0	0	0	0	6	0	0	0	0	0	6	0.6	0	6 (2020)
16.	Egyptian Goose	0	11	35	40	61	76	111	68	53	85	540	54	0	111 (2022)
17.	Shelduck	0	50	28	70	131	117	27	66	92	118	699	70	0	131 (2020)
18.	Ruddy Shelduck	0	2	1	0	17	5	20	1	8	0	54	5.4	0	20 (2022)
19.	Garganey	0	0	0	0	2	0	1	0	0	3	6	0.6	0	3 (2025)
20.	Shoveler	47	149	1188	1317	625	628	199	117	350	88	4708	471	0	1317 (2019)
21.	Gadwall	11	107	308	471	191	480	93	50	120	43	1874	187	0	480 (2021)
22.	Wigeon	261	1414	868	860	1277	2173	1020	383	2777	51	11084	1108	0	2777 (2024)
23.	Mallard	0	39	75	111	42	70	20	3	19	11	390	39	0	111 (2019)
24.	Pintail	11	143	22	44	208	75	130	60	91	4	788	79	0	208 (2020)
25.	Teal	0	9	47	77	24	33	29	4	11	0	234	23	0	77 (2019)
26.	duck sp.	0	0	0	0	0	12	33	0	11	0	56	5.6	0	33 (2022)
27.	Pochard	0	0	18	13	13	10	4	3	23	8	92	9.2	0	23 (2024)
28.	Tufted Duck	0	4	4	26	42	9	12	4	29	17	147	15	0	42 (2020)
29.	Goldeneye	0	0	0	5	0	2	0	2	3	0	12	1.2	0	5 (2019)
30.	Smew	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
31.	Goosander	0	3	0	5	8	15	2	5	7	6	51	5.1	0	15 (2021)
32.	Red-breasted Merganser	0	4	0	4	0	7	2	0	0	0	17	1.7	0	7 (2021)
33.	Swift	0	144	117	331	469	1207	408	414	529	496	4115	412	0	1207 (2021)
34.	Cuckoo	0	1	4	2	2	7	7	3	19	18	63	6.3	0	19 (2024)
35.	Swallow x House Martin (hybrid)	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
36.	Stock Dove	26	235	326	881	1501	1092	724	132	1492	91	6500	650	0	1501 (2020)
37.	Woodpigeon	61	2695	2551	3662	3467	2817	2576	602	5768	311	24510	2451	0	5768 (2024)
38.	dove (Columba) sp.	0	2	0	0	0	0	0	0	0	0	2	0.2	0	2 (2017)
39.	Turtle Dove	0	0	0	0	0	0	0	0	1	1	2	0.2	0	1 (2024)
40.	Collared Dove	0	40	49	53	70	52	9	13	56	84	426	43	0	84 (2025)
41.	Moorhen	0	0	0	0	0	0	0	0	7	0	7	0.7	0	7 (2024)
42.	Coot	0	0	0	0	0	0	0	0	8	0	8	0.8	0	8 (2024)
43.	Crane	0	0	0	0	0	0	0	245	104	2	351	35	0	245 (2023)
44.	Little Grebe	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
45.	Great Crested Grebe	2	0	4	17	5	9	8	4	9	2	60	6	0	17 (2019)
46.	Oystercatcher	0	4	14	9	19	15	39	22	39	20	181	18	0	39 (2022)
47.	Black-winged Stilt	0	0	1	0	0	0	0	3	0	0	4	0.4	0	3 (2023)
48.	Avocet	0	3	1	19	9	2	5	4	6	8	57	5.7	0	19 (2019)
49.	Grey Plover	0	11	4	1	0	8	4	6	2	0	36	3.6	0	11 (2017)
50.	Golden Plover	0	183	300	186	103	324	120	7	180	122	1525	153	0	324 (2021)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
51.	Dotterel	0	0	0	0	0	0	0	4	0	0	4	0.4	0	4 (2023)
52.	Ringed Plover	0	74	31	24	48	51	36	77	41	6	388	39	0	77 (2023)
53.	Little Ringed Plover	0	2	6	11	11	10	12	29	12	91	184	18	0	91 (2025)
54.	Lapwing	21	924	1199	1434	1854	1682	1044	419	2201	74	10852	1085	0	2201 (2024)
55.	Whimbrel	0	80	173	135	621	1450	564	508	1234	626	5391	539	0	1450 (2021)
56.	Curlew	3	6	31	57	47	51	13	23	27	13	271	27	0	57 (2019)
57.	Numenius sp.	0	0	0	2	0	0	0	0	0	0	2	0.2	0	2 (2019)
58.	Bar-tailed Godwit	0	0	1	0	0	2	0	0	13	0	16	1.6	0	13 (2024)
59.	Black-tailed Godwit	0	132	101	184	1150	358	246	188	711	497	3567	357	0	1150 (2020)
60.	Icelandic Black-tailed Godwit	0	0	0	0	0	0	0	0	91	6	97	9.7	0	91 (2024)
61.	Jack Snipe	0	1	0	0	4	0	0	0	0	0	5	0.5	0	4 (2020)
62.	Woodcock	0	0	0	1	0	1	1	0	0	0	3	0.3	0	1 (2019)
63.	Snipe	9	464	140	464	360	304	240	215	309	25	2530	253	0	464 (2017)
64.	Common Sandpiper	0	0	0	8	5	3	1	17	10	7	51	5.1	0	17 (2023)
65.	Green Sandpiper	0	14	24	69	87	120	54	127	12	161	668	67	0	161 (2025)
66.	Marsh Sandpiper	0	0	0	0	0	0	0	0	0	1	1	0.1	0	1 (2025)
67.	Wood Sandpiper	0	10	5	12	26	33	31	14	0	59	190	19	0	59 (2025)
68.	Redshank	0	4	5	24	14	101	22	36	37	130	373	37	0	130 (2025)
69.	Spotted Redshank	0	13	3	2	6	17	16	15	7	15	94	9.4	0	17 (2021)
70.	Greenshank	0	52	18	26	89	69	35	157	35	90	571	57	0	157 (2023)
71.	Turnstone	0	2	0	2	0	0	0	0	0	0	4	0.4	0	2 (2017)
72.	Knot	0	0	0	0	0	2	0	0	1	0	3	0.3	0	2 (2021)
73.	Ruff	4	54	41	22	213	109	43	45	49	117	697	70	0	213 (2020)
74.	wader sp.	0	0	1	10	18	0	54	2	10	0	95	9.5	0	54 (2022)
75.	Curlew Sandpiper	0	0	0	0	4	0	0	1	0	0	5	0.5	0	4 (2020)
76.	Temminck's Stint	0	0	0	10	1	3	10	7	5	7	43	4.3	0	10 (2019)
77.	Dunlin	0	42	24	32	8	72	8	24	16	2	228	23	0	72 (2021)
78.	Little Stint	0	3	1	0	0	0	2	1	0	0	7	0.7	0	3 (2017)
79.	Calidris sp.	0	0	0	0	0	0	2	0	0	0	2	0.2	0	2 (2022)
80.	Little Tern	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
81.	Caspian Tern	0	0	0	2	2	3	4	7	12	6	36	3.6	0	12 (2024)
82.	Whiskered Tern	0	0	0	0	1	0	0	0	1	0	2	0.2	0	1 (2020)
83.	Black Tern	0	8	3	16	36	39	56	70	119	79	426	43	0	119 (2024)
84.	White-winged Black Tern	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
85.	Common Tern	0	20	25	127	185	129	96	266	148	157	1153	115	0	266 (2023)
86.	Little Gull	0	15	0	6	19	95	19	7	4	8	173	17	0	95 (2021)
87.	Sabine's Gull	0	0	0	0	0	0	0	1	0	0	1	0.1	0	1 (2023)
88.	Black-headed Gull	0	1017	4049	3438	5239	3402	4728	945	6747	1123	30688	3069	0	6747 (2024)
89.	Mediterranean Gull	0	101	106	137	388	485	376	435	504	470	3002	300	0	504 (2024)
90.	Common Gull	0	63	143	138	67	51	88	22	156	18	746	75	0	156 (2024)
91.	Caspian Gull	0	2	1	1	3	3	3	3	10	0	26	2.6	0	10 (2024)
92.	Herring Gull	0	12	53	73	73	36	33	7	50	11	348	35	0	73 (2019)
93.	Yellow-legged Gull	0	0	1	0	1	2	2	0	2	1	9	0.9	0	2 (2021)
94.	Great Black-backed Gull	0	31	24	27	13	4	2	1	3	1	106	11	0	31 (2017)
95.	Lesser Black-backed Gull	0	59	365	175	465	523	231	253	672	199	2942	294	0	672 (2024)
96.	Red-throated Diver	0	0	0	0	3	0	0	0	0	0	3	0.3	0	3 (2020)
97.	Black Stork	0	0	0	0	0	0	1	0	1	0	2	0.2	0	1 (2022)
98.	White Stork	0	9	23	61	13	156	36	50	61	102	511	51	0	156 (2021)
99.	Cormorant	210	2395	3154	3136	3929	3921	3602	2276	4215	1759	28597	2860	1	4215 (2024)
100.	Spoonbill	15	141	57	230	283	388	236	214	324	206	2094	209	0	388 (2021)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
101.	Bittern	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
102.	Night Heron	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
103.	Little Egret	1	2	8	10	7	18	5	1	13	10	75	7.5	0	18 (2021)
104.	Egretta sp.	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
105.	Cattle Egret	0	3	0	1	1	7	26	0	5	14	57	5.7	0	26 (2022)
106.	Great White Egret	4	77	103	143	156	106	154	103	246	87	1179	118	0	246 (2024)
107.	heron sp.	0	0	15	0	10	16	1	18	1	0	61	6.1	0	18 (2023)
108.	Grey Heron	68	250	156	432	237	153	116	156	320	235	2123	212	0	432 (2019)
109.	Purple Heron	622	564	539	899	581	589	486	622	859	179	5940	594	0	899 (2019)
110.	Osprey	1	2	1	4	4	17	11	11	22	9	82	8.2	0	22 (2024)
111.	Honey Buzzard	0	2	0	0	0	15	8	2	35	1	63	6.3	0	35 (2024)
112.	Sparrowhawk	1	57	33	57	58	71	64	57	115	64	577	58	0	115 (2024)
113.	Goshawk	0	0	1	3	4	1	0	0	14	5	28	2.8	0	14 (2024)
114.	Marsh Harrier	5	43	31	121	167	190	154	138	223	277	1349	135	0	277 (2025)
115.	Hen Harrier	0	8	8	7	9	14	9	2	5	23	85	8.5	0	23 (2025)
116.	Pallid Harrier	0	0	1	3	2	2	1	1	3	0	13	1.3	0	3 (2019)
117.	Montagu's Harrier	0	0	0	1	1	1	1	1	1	0	6	0.6	0	1 (2019)
118.	harrier sp.	0	0	0	0	0	0	1	1	4	0	6	0.6	0	4 (2024)
119.	Montagu's/Pallid Harrier	0	0	0	1	0	0	0	0	1	0	2	0.2	0	1 (2019)
120.	Hen/Montagu's/Pallid Harrier	0	0	0	0	0	1	1	0	0	0	2	0.2	0	1 (2021)
121.	Red Kite	0	1	2	0	3	3	2	2	4	6	23	2.3	0	6 (2025)
122.	Black Kite	0	1	0	2	1	2	2	5	0	4	17	1.7	0	5 (2023)
123.	White-tailed Eagle	0	0	0	2	3	9	4	4	6	8	36	3.6	6	9 (2021)
124.	Common Buzzard	0	79	16	79	425	160	35	44	108	36	982	98	0	425 (2020)
125.	Buzzard/Honey Buzzard	0	0	0	0	0	0	1	1	0	0	2	0.2	0	1 (2022)
126.	Short-eared Owl	0	1	2	1	1	2	0	0	1	1	9	0.9	0	2 (2018)
127.	owl sp.	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
128.	Hoopoe	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
129.	Great Spotted Woodpecker	0	17	7	22	19	11	4	12	7	5	104	10	0	22 (2019)
130.	Green Woodpecker	0	0	0	2	0	1	2	0	2	0	7	0.7	0	2 (2019)
131.	Kestrel	0	17	7	64	31	26	11	54	33	71	314	31	0	71 (2025)
132.	falcon sp.	0	0	0	0	0	2	1	0	2	1	6	0.6	0	2 (2021)
133.	Red-footed Falcon	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
134.	Merlin	0	1	2	16	5	18	18	16	17	19	112	11	0	19 (2025)
135.	Hobby	0	1	2	7	7	21	14	5	21	8	86	8.6	0	21 (2021)
136.	Peregrine	0	2	2	9	8	9	3	5	9	5	52	5.2	0	9 (2019)
137.	Rose-ringed Parakeet	0	0	37	66	1	30	10	2	8	3	157	16	0	66 (2019)
138.	Golden Oriole	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
139.	Jay	0	3	14	160	49	200	22	21	8	7	484	48	0	200 (2021)
140.	Magpie	0	31	62	50	16	43	15	13	26	10	266	27	0	62 (2018)
141.	Jackdaw	0	1005	661	497	1197	1743	933	352	1363	265	8016	802	0	1743 (2021)
142.	Rook	0	8	8	26	95	68	52	6	34	41	338	34	0	95 (2020)
143.	Carrion Crow	0	20	101	120	65	57	37	32	130	33	595	60	0	130 (2024)
144.	Hooded Crow	0	0	0	0	0	0	0	0	0	1	1	0.1	0	1 (2025)
145.	Raven	0	0	0	0	0	0	0	0	0	2	2	0.2	0	2 (2025)
146.	Coal Tit	0	0	1	0	0	12	0	0	0	0	13	1.3	0	12 (2021)
147.	Blue Tit	0	60	7	91	27	689	488	15	99	0	1476	148	0	689 (2021)
148.	Great Tit	0	11	5	0	1	1	0	0	8	0	26	2.6	0	11 (2017)
149.	Penduline Tit	0	1	0	2	0	0	0	0	1	0	4	0.4	0	2 (2019)
150.	Bearded Tit	0	83	0	4	0	10	1	0	2	0	100	10	0	83 (2017)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
151.	Wood Lark	0	25	47	3	4	21	44	26	88	1	259	26	0	88 (2024)
152.	Skylark	1	3611	5671	5468	1310	3432	5904	363	8205	13	33978	3398	0	8205 (2024)
153.	Sand Martin	0	10	14	195	313	1262	113	742	236	744	3629	363	0	1262 (2021)
154.	Swallow	21	806	969	2320	1282	1232	1062	1013	906	661	10272	1027	0	2320 (2019)
155.	House Martin	0	191	45	65	158	118	41	29	22	51	720	72	0	191 (2017)
156.	Long-tailed Tit	0	13	0	0	8	0	0	0	0	0	21	2.1	0	13 (2017)
157.	Willow Warbler	0	0	0	0	0	1	1	0	0	0	2	0.2	0	1 (2021)
158.	Chiffchaff	3	1	0	2	4	3	4	4	11	4	36	3.6	0	11 (2024)
159.	Reed Warbler	0	0	0	0	0	0	1	0	1	0	2	0.2	0	1 (2022)
160.	Marsh Warbler	0	0	0	0	0	1	0	0	0	0	1	0.1	0	1 (2021)
161.	Savi's Warbler	0	0	0	0	0	0	0	0	0	1	1	0.1	0	1 (2025)
162.	Blackcap	0	0	0	0	0	1	0	0	2	0	3	0.3	0	2 (2024)
163.	Whitethroat	0	0	0	0	0	1	0	0	3	1	5	0.5	0	3 (2024)
164.	Goldcrest	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
165.	Starling	295	20717	16491	6700	10697	8491	8892	1042	17242	4282	94849	9485	0	20717 (2017)
166.	Song Thrush	2	739	845	2022	855	456	3378	89	407	674	9467	947	0	3378 (2022)
167.	Mistle Thrush	0	34	4	12	20	8	13	3	29	6	129	13	0	34 (2017)
168.	Redwing	0	5050	779	4669	19868	10531	9361	3871	8536	1876	64541	6454	0	19868 (2020)
169.	Blackbird	0	22	15	38	34	34	25	1	64	10	243	24	0	64 (2024)
170.	Fieldfare	0	585	691	680	4255	496	547	1798	303	268	9623	962	0	4255 (2020)
171.	Ring Ouzel	0	0	19	11	29	38	27	33	22	10	189	19	0	38 (2021)
172.	thrush sp.	0	0	0	0	0	0	1	4	2	0	7	0.7	0	4 (2023)
173.	Spotted Flycatcher	0	0	0	0	0	0	0	0	0	1	1	0.1	0	1 (2025)
174.	Robin	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
175.	Black Redstart	0	0	0	0	1	0	0	0	0	0	1	0.1	0	1 (2020)
176.	Whinchat	0	0	0	1	0	0	1	0	0	2	4	0.4	0	2 (2025)
177.	Stonechat	0	0	0	0	0	1	0	0	1	1	3	0.3	0	1 (2021)
178.	Wheatear	0	3	1	2	1	0	0	2	7	4	20	2	0	7 (2024)
179.	Tree Sparrow	1	124	151	82	36	17	63	1	2	0	477	48	0	151 (2018)
180.	House Sparrow	0	0	0	0	0	0	0	0	2	0	2	0.2	0	2 (2024)
181.	Dunnock	1	18	14	0	6	12	9	3	13	0	76	7.6	0	18 (2017)
182.	Blue-headed Wagtail	1	5	74	41	22	57	98	70	64	32	464	46	0	98 (2022)
183.	Yellow Wagtail (flavissima)	0	1	0	2	1	2	1	2	1	0	10	1	0	2 (2019)
184.	Grey-headed Wagtail	0	0	0	0	0	21	27	29	13	106	196	20	0	106 (2025)
185.	Yellow wagtail sp.	0	94	65	241	239	320	230	412	347	548	2496	250	0	548 (2025)
186.	Grey Wagtail	4	93	31	38	42	57	38	24	28	1	356	36	0	93 (2017)
187.	White Wagtail	0	7	50	23	14	110	52	75	108	34	473	47	0	110 (2021)
188.	alba wagtail sp.	97	409	332	257	369	165	246	113	336	263	2587	259	0	409 (2017)
189.	Motacilla (wagtail) sp.	0	0	0	0	0	3	1	5	6	0	15	1.5	0	6 (2024)
190.	Pied Wagtail	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
191.	Richard's Pipit	0	3	1	0	0	0	0	0	1	0	5	0.5	0	3 (2017)
192.	Blyth's Pipit	0	0	0	0	0	0	0	0	1	0	1	0.1	0	1 (2024)
193.	Tawny Pipit	0	0	0	1	1	1	0	0	0	0	3	0.3	0	1 (2019)
194.	Meadow Pipit	3587	15175	6206	29418	14901	19670	16605	34018	3027	15476	158083	15808	0	34018 (2023)
195.	Tree Pipit	0	7	9	62	34	33	26	37	62	59	329	33	0	62 (2019)
196.	Red-throated Pipit	0	0	0	1	0	0	0	0	0	1	2	0.2	0	1 (2019)
197.	Water Pipit	0	8	15	17	8	33	32	7	19	4	143	14	0	33 (2021)
198.	Rock Pipit	0	1	0	2	1	1	4	3	5	0	17	1.7	0	5 (2024)
199.	Rock Pipit/Water Pipit	0	28	0	17	13	14	15	4	15	2	108	11	0	28 (2017)
200.	Chaffinch	79	19582	13351	4429	15583	43659	13305	5987	7496	507	123978	12398	0	43659 (2021)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
201.	Brambling	0	108	711	17	65	612	49	5	288	0	1855	186	0	711 (2018)
202.	Chaffinch/Brambling	0	0	0	0	0	259	0	0	0	0	259	26	0	259 (2021)
203.	Hawfinch	0	6	7	3	3	13	6	5	100	6	149	15	0	100 (2024)
204.	Greenfinch	2	44	47	14	26	40	42	40	60	7	322	32	0	60 (2024)
205.	Linnet	26	379	646	194	205	386	569	315	374	97	3191	319	0	646 (2018)
206.	Lesser Redpoll	0	4	0	0	0	0	0	0	0	0	4	0.4	0	4 (2017)
207.	redpoll sp.	0	13	17	0	8	0	6	8	2	0	54	5.4	0	17 (2018)
208.	Crossbill	0	22	0	20	3	0	0	2	0	0	47	4.7	0	22 (2017)
209.	Goldfinch	2	98	39	95	83	69	51	41	114	31	623	62	0	114 (2024)
210.	Serin	0	1	1	0	0	0	0	0	0	0	2	0.2	0	1 (2017)
211.	Siskin	2	189	260	1235	236	1802	222	1419	402	0	5767	577	0	1802 (2021)
212.	Lapland Bunting	0	2	1	3	1	1	0	1	0	0	9	0.9	0	3 (2019)
213.	Snow Bunting	0	1	1	0	0	0	0	0	0	0	2	0.2	0	1 (2017)
214.	Yellowhammer	0	1	2	2	0	0	0	0	0	1	6	0.6	0	2 (2018)
215.	Ortolan Bunting	0	0	0	1	0	0	0	0	1	0	2	0.2	0	1 (2019)
216.	Reed Bunting	17	902	1183	532	207	423	270	102	436	27	4099	410	0	1183 (2018)
217.	passerine sp.	0	0	0	0	0	0	1	0	13	0	14	1.4	0	13 (2024)
218.	Species unknown (escape)	0	0	0	0	0	0	0	1	0	1	2	0.2	0	1 (2023)
	Other species
1.	Grey seal	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
	Other species
1.	Small Tortoiseshell	0	0	1	2	0	3	3	0	0	0	9	0.9	0	3 (2021)
2.	Dark Clouded Yellow	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
3.	Brimstone	0	0	0	4	1	1	0	0	0	2	8	0.8	0	4 (2019)
4.	European Peacock	0	0	2	7	2	10	6	5	54	12	98	9.8	0	54 (2024)
5.	Swallowtail	0	0	0	0	0	0	0	1	0	1	2	0.2	0	1 (2023)
6.	Speckled Wood	0	0	0	0	0	0	0	1	0	1	2	0.2	0	1 (2023)
7.	Green-veined White	0	0	0	1	0	0	0	0	0	0	1	0.1	0	1 (2019)
8.	Small White	0	0	0	17	1	0	0	0	0	0	18	1.8	0	17 (2019)
9.	white sp. (butterfly)	0	0	0	5	2	10	3	6	4	15	45	4.5	0	15 (2025)
10.	Comma	0	0	0	0	1	0	0	0	0	1	2	0.2	0	1 (2020)
11.	Red Admiral	0	0	6	8	1	6	5	0	5	1	32	3.2	0	8 (2019)
12.	Painted Lady	0	0	0	2	0	0	0	0	0	0	2	0.2	0	2 (2019)
	Other species
1.	Dragonfly unknown	0	0	0	0	0	0	1	0	0	0	1	0.1	0	1 (2022)
	Other species
1.	Bumblebee sp.	0	0	28	29	32	53	7	9	23	3	184	18	0	53 (2021)
	Species	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	Totals	Average	Present	Year Maximum
	Totals	5678	87900	69690	86198	118604	147149	93270	65122	99769	38962	812342	81234	7
	Observation hours	23:05	158:57	122:11	216:23	251:52	338:16	260:16	165:54	365:02	205:06	2,107:02	210:42

Trektellen

Totals De Gorzen (Ridderkerk) 2016 - 2025