IDENTIFICATION OF YELLOW-LEGGED GULLS - 11 -> Discussion -
BY NORMAN DEANS VAN SWELM
(RE-EDITED feb. 2011)
chapters: /1-intro - /2-bodytext -
/3-moult - /4-leg colour
- colour of the orbital ring - long call - /5-the gull in the middle - /6-the
Caspian or Black Sea Herring Gull
<returning to intro
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