Yellow-legged Gull - Larus michahellis

(last update: October 08 2013)

Delfín González
Gabriel Martín
Antonio Gutierrez
Amir Ben Dov
Mars Muusse

Yellow-legged Gull michahellis 2CY, April 19 2002, Etaples, NW France (50.42N,1.34E).

Average April 2CY michahellis in plumage and jizz. This is a 2CY michahellis with tertial #1 missing, tertials #2-3 have been replaced for second generation feathers, the lower tertials are still juvenile. Greater coverts #1-4 are second generation feathers with # 3 showing a grey base, like the tertials. The inner greater coverts show an anchor pattern on the tip and looking closer at the state of wear in the fringes, these inner greater coverts may have been included in the partial autumn moult (post-juvenile moult). Median coverts #1-9 were included in the post-juvenile moult. Six lower lesser coverts and seven lesser coverts were also moulted last autumn. 
About 50% of the scapulars (mainly upper scapulars) are grey adult-like third generation feathers.

The complete tail and all primaries are still juvenile. The legs are pale and the orbital ring starts to turn reddish.