Recognition of subspecies in Yellow Wagtails.
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Biometri och fenologi för småspovarNumenius phaeopus som rastar på Skanörs ljung under sommaren. (ES) |
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Notes on biometry, sex determination and moult in Little Tern Sterna albifrons by H. Behmann and C. Persson |
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A long-term study of Yellow Wagtails (Motacilla flava) at roosts in SW Scania, Sweden
Recognition of subspecies in Yellow Wagtails. |