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First-winter Thayer's Gull in Iceland

A (very probable) first-winter Thayer's Gull Larus thayeri was discovered at Eskifjörður (East Iceland) on 3 April 2004, by Yann Kolbeinsson, Edward Barry Rickson and Sigmundur Ásgeirsson. It stayed with Herring Gulls and several Glaucous Gulls (and hybrids Herring x Glaucous). It was only seen during that single day.

Below is a selection of video-grabs, plus one digiscoped photo. The bird being rather distant and the light very poor makes the quality especially low!

This represents the 2nd record for Iceland (if accepted), which comes shortly after the first record in early March (see photos here).

- YK 07/04/2004

- click on the photos to enlarge -

Thayer's Gull Larus thayeri
Eskifjörður (E)
3 April 2004

First-winter bird. Note the partly Iceland Gull aspect, very
dark plumage (looking uniform below) and much darker primaries,
and the dark bill that has just started to lighten up at the base.

© Yann Kolbeinsson

Thayer's Gull Larus thayeri
Eskifjörður (E)
3 April 2004

This photo shows well the dark primaries, and partly visible
is the dark secondary bar.

© Yann Kolbeinsson

Thayer's Gull Larus thayeri
Eskifjörður (E)
3 April 2004

Note the heavily barred undertail coverts, and the dark
underparts & -wing. A paler neck collar is barely visible.

© Yann Kolbeinsson

Thayer's Gull Larus thayeri
Eskifjörður (E)
3 April 2004

Tail feathers look completely dark, and here the dark
secondary bars are well visible.

© Yann Kolbeinsson

Thayer's Gull Larus thayeri
Eskifjörður (E)
3 April 2004

Standing next to a first-winter Herring Gull (left).

© Yann Kolbeinsson