| Titre : | British Birds 94(5) - May, 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
George Sangster, Auteur ;
Martin Collinson, Auteur ;
Andreas J. Helbig, Auteur ;
Alan G. Knox, Auteur ;
David T. Parkin, Auteur ;
Tony Prater, Auteur
During the second half of the twentieth century, Green-winged Teal Anas carolinensis was almost universally treated as a subspecies of 'Common Teal'. Reassessment of morphological and behavioural differences between Green-winged Teal and Eurasia[...]
Article
Colin Bradshaw, Auteur
Blyth's Reed Warbler Acrocephalus dumetorum remains one of the most difficult identification challenges facing field birders in Britain. This paper describes a case where identification was still not proven, despite the bird being trapped and me[...]
