First-winter Ring-billed Gull
Juvenile first-winter Glaucous Gull (one of five at Ponta Delgada, Sao Miguel)
Juvenile/first-winter Glaucous Gull (note feather lice on face)
Presumed American Herring Gull ?
The lack of a squared off tongue on p10 means its not possible to clinch the identification. The heavy head markings and pale yellow bill are good indicators as is the p5 band and sub-terminal band on p10.
Ring-billed Gulls at Praia da Vitoria, Terceira- 15 at this traditional wintering site
Bonaparte's and Black-headed Gull in Praia da Vitoria Bay, Terceira
Great Scaup, Tufted Duck, Lesser Scaup and Ring-necked Duck at Praia Pools, Terceira
American Wigeons (and Eurasian Wigeon) at Praia Pools, Terceira
Melanistic Blackcap- the hooded type found across Macronesia (not Cape Verde). First time I've seen this form.
Sofia at Praia Pools
Chris Gibhins, Peter Adriaens and Darryl Spittle
Spent the last week on the Azores doing some work on Azores Gull and having a look round. Here's a summary of some of the interesting sightings:
2 Bonaparte's Gull, 15 Ring-billed Gull, 2 adult presumed American Herring Gull (also a 3rd cycle bird and a confirmed adult seen by Peter Adriaens), 16 American Wigeon, 3 Lesser Scaup, 1 Greater Scaup, 2 Blue-winged Teal, 12 Great Northern Diver, 2 Semipalmated Plover, 1 Hudsonian Whimbrel, 1 Short-billed Dowticher,
5 Glaucous Gull, 5 Mediterranean Gull, 7 Ring-billed Gull, 1 Pied-billed Grebe, Azores Bullfinches