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SHIANT ISLES SEABIRD COLONY REGISTER
This data is from the Joint Nature Conservation Committee & Seabird Group Seabird Colony Register.
See notes.
|
Species name |
Count year |
Count date |
Accurate count |
Minimum estimate |
Maximum estimate |
Best estimate |
Unit code |
Observer/source |
|
COMMON GULL |
74 |
|
1.00 |
|
|
1 |
2.00 |
D STEVENTON |
|
COMMON GULL |
79 |
|
1.00 |
|
|
1 |
2.00 |
D STEVENTON |
|
COMMON GULL |
82 |
006 |
1.00 |
|
|
1 |
2.00 |
D STEVENTON |
|
COMMON GULL |
85 |
|
|
2.00 |
|
2+ |
3.00 |
D STEVENTON |
|
COMMON GULL |
86 |
036 |
|
|
|
|
|
S MURRAY |
|
COMMON GULL |
95 |
037 |
5.00 |
|
|
5 |
3.50 |
J LOVE, UNPUB. SNH REPORT |
|
FULMAR |
70 |
|
|
3,449.00 |
3,685.00 |
3567 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
FULMAR |
86 |
036 |
|
6,816.00 |
|
6816 |
2.00 |
S MURRAY |
|
FULMAR |
95 |
037 |
5,246,00 |
|
|
5246 |
2,00 |
J LOVE, UNPUB. SNH REPORT |
|
GANNET |
75 |
|
1.00 |
|
|
1 |
1.00 |
D STEVENTON |
|
GANNET |
76 |
|
1.00 |
|
|
1 |
1.00 |
D STEVENTON |
|
GANNET |
79 |
|
1.00 |
|
|
1 |
1.00 |
D STEVENTON |
|
GANNET |
82 |
|
1.00 |
|
|
1 |
2.00 |
D STEVENTON |
|
GANNET |
84 |
095 |
1.00 |
|
|
1 |
2.00 |
I BUXTON |
|
GANNET |
85 |
|
1.00 |
|
|
1 |
1.00 |
D STEVENTON |
|
GANNET |
86 |
036 |
1.00 |
|
|
1 |
1.00 |
S MURRAY |
|
GANNET |
88 |
|
0.00 |
|
|
0 |
|
A.CAMPBELL PER S.ANGUS / TASKER & WEBB |
|
GANNET |
89 |
|
0.00 |
|
|
0 |
|
S.ANGUS |
|
GANNET |
90 |
|
0.00 |
|
|
0 |
|
OUTER HEBRIDES B.R. |
|
GANNET |
94 |
|
0.00 |
|
|
0 |
|
S MURRAY / S WANLESS |
|
GANNET |
95 |
037 |
1.00 |
|
|
1 |
1.00 |
J LOVE, UNPUB. SNH REPORT |
|
GREAT BB GULL |
70 |
|
|
172.00 |
372.00 |
272 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
GREAT BB GULL |
72 |
|
30.00 |
|
|
30 |
2.00 |
D STEVENTON |
|
GREAT BB GULL |
82 |
006 |
135.00 |
|
|
135 |
2.00 |
D STEVENTON |
|
GREAT BB GULL |
86 |
036 |
|
109.00 |
144.00 |
126 |
2.00 |
S MURRAY |
|
GREAT BB GULL |
95 |
037 |
|
164.00 |
|
164 |
3.00 |
J LOVE, UNPUB. SNH REPORT |
|
GREAT SKUA |
80 |
|
|
|
|
|
|
H.BIRBECK |
|
GREAT SKUA |
82 |
006 |
2.00 |
|
|
2 |
2.00 |
D STEVENTON |
|
GREAT SKUA |
85 |
|
|
5.00 |
|
5+ |
3.00 |
D STEVENTON |
|
GREAT SKUA |
86 |
036 |
2.00 |
3.00 |
5.00 |
6 |
2.00 |
S MURRAY |
|
GREAT SKUA |
95 |
037 |
|
14.00 |
15.00 |
14 |
2.00 |
J LOVE, UNPUB. SNH REPORT |
|
GUILLEMOT |
70 |
|
|
7,292.00 |
15,446.00 |
11369 |
1.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
GUILLEMOT |
82 |
|
|
|
|
|
|
D STEVENTON |
|
GUILLEMOT |
86 |
036 |
|
16,759.00 |
20,000.00 |
18,379 |
1.00 |
S MURRAY |
|
GUILLEMOT |
95 |
037 |
12,770.00 |
|
|
12770 |
1.00 |
J LOVE, UNPUB. SNH REPORT |
|
HERRING GULL |
70 |
... |
|
182.00 |
217.00 |
199 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
HERRING GULL |
82 |
|
|
|
|
|
|
D STEVENTON |
|
HERRING GULL |
86 |
036 |
|
136.00 |
192.00 |
164 |
2.00 |
S MURRAY |
|
HERRING GULL |
95 |
037 |
|
44.00 |
|
44 |
2.00 |
J LOVE, UNPUB. SNH REPORT |
|
KITTIWAKE |
70 |
|
|
888.00 |
922.00 |
905 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
KITTIWAKE |
79 |
|
1,170.00 |
|
|
1170 |
2.00 |
D STEVENTON |
|
KITTIWAKE |
82 |
|
|
|
|
|
|
D STEVENTON |
|
KITTIWAKE |
86 |
036 |
|
1,807.00 |
1,920.00 |
1863 |
2.00 |
S MURRAY |
|
KITTIWAKE |
90 |
|
|
560.00 |
560.00 |
560 |
3.00 |
OUTER HEBRIDES BR |
|
KITTIWAKE |
95 |
037 |
1,808.00 |
|
|
1808 |
2.00 |
J LOVE, UNPUB. SNH REPORT |
|
LESSER BB GULL |
70 |
|
|
10.00 |
14.00 |
12 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
LESSER BB GULL |
72 |
|
|
72.00 |
|
72 |
2.00 |
D STEVENTON |
|
LESSER BB GULL |
74 |
|
|
25.00 |
|
25 |
2.00 |
D STEVENTON |
|
LESSER BB GULL |
75 |
|
32.00 |
|
|
32 |
2.00 |
D STEVENTON |
|
LESSER BB GULL |
76 |
|
|
22.00 |
|
22 |
2.00 |
D STEVENTON |
|
LESSER BB GULL |
79 |
|
|
14.00 |
|
14 |
2.00 |
D STEVENTON |
|
LESSER BB GULL |
82 |
|
|
|
|
|
|
D STEVENTON |
|
LESSER BB GULL |
86 |
036 |
|
42.00 |
60.00 |
51 |
2.00 |
S MURRAY |
|
LESSER BB GULL |
95 |
037 |
|
43.00 |
|
43 |
2.00 |
J LOVE, UNPUB. SNH REPORT |
|
PUFFIN |
70 |
|
|
62,792.00 |
89,492.00 |
76142 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
PUFFIN |
86 |
036 |
|
|
|
|
|
S MURRAY |
|
RAZORBILL |
70 |
|
|
3,149.00 |
3,647.00 |
3398 |
1.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
RAZORBILL |
86 |
036 |
|
8,195.00 |
13,700.00 |
10947 |
1.00 |
S MURRAY |
|
RAZORBILL |
95 |
037 |
7,715.00 |
|
|
7715 |
1.00 |
J LOVE, UNPUB. SNH REPORT |
|
SHAG |
70 |
-67 |
|
306.00 |
388.00 |
347 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
SHAG |
82 |
006 |
|
450.00 |
|
450 |
2.00 |
D STEVENTON |
|
SHAG |
85 |
|
|
700.00 |
|
700+ |
2.00 |
D STEVENTON |
|
SHAG |
86 |
036 |
|
1,540.00 |
2,013.00 |
1776 |
2.00 |
S MURRAY |
|
SHAG |
95 |
037 |
|
|
|
|
|
J LOVE, UNPUB. SNH REPORT |
|
STORM PETREL |
70 |
|
|
|
|
|
|
SEAFARER: M.BROOKE, D STEVENTON |
|
TYSTIE |
70 |
|
2.00 |
|
|
2 |
2.00 |
SEAFARER: M.BROOKE, D STEVENTON |
|
TYSTIE |
82 |
006 |
18.00 |
|
|
18 |
1.00 |
D STEVENTON |
|
TYSTIE |
86 |
036 |
3.00 |
|
|
3 |
1.00 |
S MURRAY |
|
TYSTIE |
88 |
084 |
31.00 |
|
|
31 |
1.00 |
A.CAMPBELL PER S.ANGUS / TASKER & WEBB |
|
TYSTIE |
95 |
037 |
2.00 |
|
|
2 |
1.00 |
J LOVE, UNPUB. SNH REPORT |
|
All species are counted as pairs, except the Guillemots and Razorbills which are counted as individuals. This is because these species do not build nests, often breed at high density on inaccessible ledges, or lay their eggs out of sight. All these factors necessitate the counting of individuals rather than breeding pairs. The only count of puffins available was done in 1970 (mostly dependent on a count of burrows). Each burrow is occupied by a pair of birds, with a single chick. Immature puffins in the colony, up to the age of 4-5, do not yet have their own burrow and are not counted separately. As a very rough rule of thumb, there will be three puffins in a colony for every occupied burrow. Puffins were also counted in 2000, but the data has not yet been submitted to the JNCC. The most accurate count of tysties or black guillemots was done in 1988 (highlighted in bold on the spreadsheet). This species can only be counted accurately during April, prior to breeding, when adult birds gather on the sea outside their chosen nesting areas. After this they become less conspicuous as they nest in crevices in the rock. Basically, all other counts for this species do not represent an accurate census. 1995 data should be regarded as a minimum estimate as the counts were done in early July when many birds had already left the islands after breeding. The three main surveys from which the data has been taken are Operation Seafarer (1969-1970), the Seabird Colony Register (1985-87, with some gaps covered in 1988), and Seabird 2000 (1999-2001, with gaps to be covered in 2002). |