Table 9: Primary Moult in First-summer Atlantic Yellow-legged Gulls at Particular Locations
|
Location |
Dates visited |
1st-summer Wing Moult as growing/missing |
Notes |
||
|
|
|
Max -imum |
Min-imum |
most freq-uent |
|
|
Santander |
1 - 9 Aug |
none |
P8/P9 |
P9/P10 |
A minority had completed moult |
|
Porto/ Minho |
29 Mar -4 Apr |
-/P1 |
none |
none |
From 2-5% had started moult |
|
Lisbon |
13 - 16 May |
-/P4 |
none |
none |
10% most advanced state, 20% P1/P2, 30% -/P1, 40% none. |
|
Setubal |
27 - 29 Mar |
none |
none |
none |
None had started moult |
|
Faro |
25 - 31 Mar |
-/P1 |
none |
none |
20% had started moult |
|
Andalucia |
26 - 31 May |
P2/P3 |
P1/P2 |
P2/P3 |
65% P2/P3, 35% P1/P2 |
|
Tanger |
20 Aug |
none |
P9/- |
P9/-; P9/P10; none |
Equal frequency for the three 'most frequent' patterns |
|
27 Aug - 2 Sep |
none |
none |
none |
Apparently moult completed |
|
|
Agadir/ Essaouira |
12 - 18 Apr |
none |
none |
none |
No moult apparently |
|
23 - 30 Apr |
P3/P4 |
none |
none |
50% no moult, c12% for each of the four states to P3/P4 |
|
|
Fuerte-ventura |
7 - 14 Apr |
P1/P2 |
none |
none |
Only minority in moult |
|
29 Sept |
none |
none |
none |
All had completed moult |
|
|
Gran Canaria |
14 - 20 May |
P6/P7 |
none |
P6/P7 |
27% at most advanced state, 20% to start moult; 13% for P3/P4, P2/P3, P1/P2; 7% for P5/P6, -/P1 |
|
23 - 30 Sept |
none |
none |
none |
All had completed moult |
|
|
Tenerife |
28 Jul - 10 Aug |
none |
P8/P9 |
none |
In late July, significant numbers (but under half) still moulting; very few are still in moult by mid-August |
|
4 - 18 Aug |
none |
none |
none |
||
|
La Palma/El Hierro |
5 - 9 Aug |
none |
P8/P9 |
none |
One bird still in moult |
|
Azores |
11 Jun |
P3/P4 |
From one photo |
||
From an analysis of close-up photographs and from field study by the author as in Table 5. Data from Azores comes from Bakker (2000).