| Titre : | British Birds 114(3) - March, 2021 |
| Type de document : | Bulletin |
| Paru le : | 01/03/2021 |
Dépouillements
Article
Gerold Dobler, Auteur
Observations in central Europe suggest that the Hen Harrier Circus cyaneus shows marked territorial behaviour in the wintering grounds. During the day, dominant females occupy the best feeding areas (with high vole densities) and defend them, pr[...]
Article
Dave Roberts, Auteur
A Black Guillemot Cepphus grylle was present at Cut End on the River Witham in Lincolnshire on 7th-10th December 2017. Its strikingly white appearance suggested it belonged to the high-Arctic breeding form 'Mancle's Black Guillemot' C. g. mandti[...]
