Trektellen
Nederlands (NL)
English (EN)
Français (FR)
Deutsch (DE)
Español (ES)
Dansk (DA)
Portuguesa (PT)
Česky (CZ)
български (BG)
Polski (PL)
American English (EN-US)
Français canadien (FR-CA)
עברי
English (scientific species)
Suomi (FI)
Svenska (SE)
Italiano (IT)
ภาษาไทย (TH)
Català (EC-CT)
eesti keel (ET)
lietuvių (LT)
Magyar (HU)
Login
Home
Remarkable
Analysis
Phenology
Record counts
Graph
Graph (combo)
Migration pattern (map)
Totals (date)
Totals (species)
Totals (species x migration site)
Totals by year (species)
Observation hours graph
Observation hours
Pictures & Documents
Pictures
Documents
Map
Contacts
Also present
all years
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
january
february
march
april
may
june
july
august
september
october
november
december
all months
spring
autumn
jan, feb & mar
apr, may & jun
jun, jul & aug
jul, aug & sep
aug, sep & oct
sep, oct & nov
oct, nov & dec
jan & feb
feb & mar
mar & apr
apr & may
may & jun
jun & jul
jul & aug
aug & sep
sep & oct
oct & nov
nov & dec
dec & jan
Totals Terschelling, Paal 18 2025
Species
Jan
Feb
Mar
Apr
May
Jun
Jul
Totals
W
E
Maximum
Presence
(%)
Presence
(days)
First
Last
1.
Dark-bellied Brent Goose
0
0
0
0
57
0
0
57
0
57
57 (
18 May
)
9
1
18 May
18 May
2.
Greylag Goose
3
0
0
0
10
0
0
13
3
10
10 (
18 May
)
18
2
26 Jan
18 May
3.
Shelduck
1
0
0
0
0
0
0
1
0
1
1 (
26 Jan
)
9
1
26 Jan
26 Jan
4.
Teal
0
0
0
0
0
0
5
5
5
0
5 (
13 Jul
)
9
1
13 Jul
13 Jul
5.
Eider
24
0
0
0
0
0
0
24
11
13
19 (
2 Jan
)
36
4
2 Jan
29 Jan
6.
Velvet Scoter
9
0
0
0
0
0
0
9
4
5
4 (
30 Jan
)
36
4
2 Jan
31 Jan
7.
Common Scoter
1354
0
0
248
84
0
560
2246
1420
826
560 (
13 Jul
)
100
11
2 Jan
13 Jul
8.
Red-breasted Merganser
8
0
0
0
0
0
1
9
4
5
5 (
2 Jan
)
27
3
2 Jan
13 Jul
9.
Red-necked Grebe
2
0
0
0
0
0
0
2
1
1
1 (
26 Jan
)
18
2
26 Jan
27 Jan
10.
Great Crested Grebe
34
0
0
0
0
0
0
34
34
0
26 (
29 Jan
)
55
6
2 Jan
31 Jan
11.
Black-necked Grebe
1
0
0
0
0
0
0
1
1
0
1 (
30 Jan
)
9
1
30 Jan
30 Jan
12.
Oystercatcher
3
0
0
1
0
0
0
4
2
2
2 (
26 Jan
)
27
3
23 Jan
20 Apr
13.
Ringed Plover
0
0
0
0
1
0
0
1
1
0
1 (
18 May
)
9
1
18 May
18 May
14.
Snipe
1
0
0
0
0
0
0
1
0
1
1 (
3 Jan
)
9
1
3 Jan
3 Jan
15.
Sanderling
4
0
0
0
4
0
1
9
5
4
4 (
3 Jan
)
27
3
3 Jan
13 Jul
16.
Little Tern
0
0
0
0
6
0
12
18
1
17
12 (
13 Jul
)
18
2
18 May
13 Jul
17.
Black Tern
0
0
0
0
1
0
0
1
0
1
1 (
18 May
)
9
1
18 May
18 May
18.
Common/Arctic Tern
0
0
0
0
208
0
172
380
163
217
208 (
18 May
)
18
2
18 May
13 Jul
19.
Common Tern
0
0
0
28
0
0
0
28
13
15
28 (
20 Apr
)
9
1
20 Apr
20 Apr
20.
Sandwich Tern
1
0
0
722
94
0
245
1062
435
627
722 (
20 Apr
)
36
4
27 Jan
13 Jul
21.
Little Gull
11
0
0
0
0
0
1
12
11
1
5 (
30 Jan
)
55
6
2 Jan
13 Jul
22.
Kittiwake
928
0
0
0
0
0
0
928
927
1
848 (
2 Jan
)
27
3
2 Jan
29 Jan
23.
Black-headed Gull
3
0
0
10
1
0
85
99
60
39
85 (
13 Jul
)
36
4
2 Jan
13 Jul
24.
Common Gull
617
0
0
10
2
0
0
629
424
205
453 (
2 Jan
)
36
4
2 Jan
18 May
25.
Herring Gull
0
0
0
0
4
0
0
4
2
2
4 (
18 May
)
9
1
18 May
18 May
26.
Great Black-backed Gull
36
0
0
0
0
0
0
36
30
6
28 (
2 Jan
)
18
2
2 Jan
3 Jan
27.
Glaucous Gull
1
0
0
0
0
0
0
1
1
0
1 (
26 Jan
)
9
1
26 Jan
26 Jan
28.
Lesser Black-backed Gull
0
0
0
43
40
0
0
83
35
48
43 (
20 Apr
)
18
2
20 Apr
18 May
29.
Razorbill/Guillemot
58
0
0
0
0
0
0
58
57
1
30 (
31 Jan
)
45
5
2 Jan
31 Jan
30.
Guillemot
2
0
0
0
0
0
0
2
2
0
1 (
2 Jan
)
18
2
2 Jan
30 Jan
Species
Jan
Feb
Mar
Apr
May
Jun
Jul
Totals
W
E
Maximum
Presence
(%)
Presence
(days)
First
Last
31.
Red-throated Diver
648
0
0
7
0
0
0
655
624
31
279 (
30 Jan
)
82
9
2 Jan
20 Apr
32.
Black-throated Diver
8
0
0
0
0
0
0
8
8
0
2 (
2 Jan
)
36
4
2 Jan
30 Jan
33.
Great Northern Diver
2
0
0
0
0
0
0
2
2
0
2 (
2 Jan
)
9
1
2 Jan
2 Jan
34.
diver sp.
0
0
0
0
2
0
0
2
0
2
2 (
18 May
)
9
1
18 May
18 May
35.
Fulmar
4
0
0
0
1
0
0
5
4
1
2 (
2 Jan
)
27
3
2 Jan
18 May
36.
Gannet
419
0
0
21
8
0
7
455
443
12
297 (
2 Jan
)
100
11
2 Jan
13 Jul
37.
Cormorant
100
0
0
35
40
0
69
244
194
50
69 (
2 Jan
)
82
9
2 Jan
13 Jul
38.
Shore Lark
4
0
0
0
0
0
0
4
0
4
4 (
2 Jan
)
9
1
2 Jan
2 Jan
39.
Swallow
0
0
0
0
3
0
0
3
0
3
3 (
18 May
)
9
1
18 May
18 May
40.
House Martin
0
0
0
0
1
0
0
1
0
1
1 (
18 May
)
9
1
18 May
18 May
41.
Snow Bunting
50
0
0
0
0
0
0
50
0
50
50 (
2 Jan
)
9
1
2 Jan
2 Jan
Other species
Species
Jan
Feb
Mar
Apr
May
Jun
Jul
Totals
W
E
Maximum
Presence
(%)
Presence
(days)
First
Last
1.
Harbour Porpoise
0
0
0
1
0
0
0
1
0
1
1 (
20 Apr
)
9
1
20 Apr
20 Apr
Species
Jan
Feb
Mar
Apr
May
Jun
Jul
Totals
W
E
Maximum
Presence
(%)
Presence
(days)
First
Last
Totals
4336
0
0
1126
567
0
1158
7187
4927
2260
100
11
Observation hours
9:00
0:00
0:00
2:00
2:00
0:00
2:00
15:00
This page is created on 2025/07/17 15:36:46 and will be cached for 2 minutes.
Partners
Sponsored by