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Totals Osmussaar lighthouse (NW), Lääne 2025
Species
May
Jun
Totals
SW
NE
Maximum
Presence
(%)
Presence
(days)
First
Last
1.
Dark-bellied Brent Goose
291
81
372
0
372
225 (
31 May
)
75
3
30 May
1 Jun
2.
Mute Swan
0
9
9
9
0
9 (
1 Jun
)
25
1
1 Jun
1 Jun
3.
Whooper Swan
0
7
7
0
7
7 (
1 Jun
)
25
1
1 Jun
1 Jun
4.
Tufted Duck
0
2
2
2
0
2 (
1 Jun
)
25
1
1 Jun
1 Jun
5.
King Eider
1
0
1
0
1
1 (
31 May
)
25
1
31 May
31 May
6.
Eider
34
12
46
15
31
29 (
31 May
)
75
3
29 May
1 Jun
7.
Velvet Scoter
20
0
20
6
14
18 (
31 May
)
50
2
29 May
31 May
8.
Common Scoter
158
104
262
11
251
121 (
31 May
)
100
4
29 May
1 Jun
9.
Goldeneye
48
58
106
31
75
58 (
1 Jun
)
75
3
29 May
1 Jun
10.
Goosander
8
4
12
4
8
7 (
31 May
)
75
3
29 May
1 Jun
11.
Red-breasted Merganser
59
61
120
26
94
61 (
1 Jun
)
75
3
30 May
1 Jun
12.
Swift
10
0
10
1
9
8 (
31 May
)
75
3
29 May
31 May
13.
Coot
1
0
1
1
0
1 (
29 May
)
25
1
29 May
29 May
14.
Grey Plover
0
35
35
0
35
35 (
1 Jun
)
25
1
1 Jun
1 Jun
15.
Knot
0
3
3
0
3
3 (
1 Jun
)
25
1
1 Jun
1 Jun
16.
small wader
0
1
1
0
1
1 (
1 Jun
)
25
1
1 Jun
1 Jun
17.
Caspian Tern
1
1
2
2
0
1 (
30 May
)
50
2
30 May
1 Jun
18.
Arctic Tern
46
5
51
19
32
37 (
31 May
)
100
4
29 May
1 Jun
19.
Common/Arctic Tern
8
11
19
16
3
11 (
1 Jun
)
75
3
30 May
1 Jun
20.
Common Tern
5
2
7
3
4
3 (
30 May
)
75
3
30 May
1 Jun
21.
Sandwich Tern
0
3
3
0
3
3 (
1 Jun
)
25
1
1 Jun
1 Jun
22.
Lesser Black-backed Gull
4
4
8
4
4
4 (
31 May
)
50
2
31 May
1 Jun
23.
Arctic Skua
4
0
4
0
4
4 (
31 May
)
25
1
31 May
31 May
24.
Black Guillemot
1
0
1
1
0
1 (
31 May
)
25
1
31 May
31 May
25.
Razorbill
16
17
33
16
17
17 (
1 Jun
)
75
3
30 May
1 Jun
26.
Razorbill/Guillemot
3
1
4
1
3
3 (
31 May
)
50
2
31 May
1 Jun
27.
Guillemot
2
2
4
3
1
2 (
31 May
)
50
2
31 May
1 Jun
28.
Red-throated Diver
14
4
18
0
18
8 (
31 May
)
75
3
30 May
1 Jun
29.
Black-throated Diver
44
31
75
13
62
40 (
31 May
)
75
3
30 May
1 Jun
30.
diver sp.
6
18
24
0
24
18 (
1 Jun
)
75
3
30 May
1 Jun
Species
May
Jun
Totals
SW
NE
Maximum
Presence
(%)
Presence
(days)
First
Last
31.
Cormorant
1
9
10
9
1
9 (
1 Jun
)
50
2
31 May
1 Jun
32.
Honey Buzzard
1
0
1
0
1
1 (
31 May
)
25
1
31 May
31 May
33.
Wood Lark
1
0
1
0
1
1 (
31 May
)
25
1
31 May
31 May
34.
White Wagtail
1
0
1
0
1
1 (
31 May
)
25
1
31 May
31 May
35.
Meadow Pipit
1
0
1
0
1
1 (
31 May
)
25
1
31 May
31 May
36.
Chaffinch
3
0
3
0
3
3 (
31 May
)
25
1
31 May
31 May
37.
Common Rosefinch
0
3
3
0
3
3 (
1 Jun
)
25
1
1 Jun
1 Jun
38.
Siskin
3
0
3
0
3
2 (
31 May
)
50
2
30 May
31 May
Species
May
Jun
Totals
SW
NE
Maximum
Presence
(%)
Presence
(days)
First
Last
Totals
795
488
1283
193
1090
100
4
Observation hours
9:45
3:35
13:20
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