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, October 01 2001, Le Portel, France.

The average moult stage for 2CY October michahellis: Primary P10 is fully grown and all the secondaries and rectrices are second generation and complete. Hence, the complete moult has ended. After this complete moult, a partial moult has included some of the tertials and wing-coverts.
The most recently feathers can be found in the upper tertials, the inner greater coverts, the central median coverts, some lesser coverts (randomly replaced, but not in the carpal edge) and in many cases the lowest row of lower scapulars is replaced by October. The head feathers show fine streaks and the flanks appear "clouded" with pale brown patches on a white base.