Hybridization of Herring and Lesser Black-backed Gulls in Britain

Autor: C. Morley, G. H. Green, M. P. Harris
Rok vydání: 1978
Předmět:
Zdroj: Bird Study. 25:161-166
ISSN: 1944-6705
0006-3657
DOI: 10.1080/00063657809476590
Popis: This paper provides the first descriptions of undoubted hybrids of these gulls to be found in Britain. These cases are associated with colonies where there has been experimental ‘cross-fostering’ of eggs, and the rarity of hybrids in relation to the scale of these experiments suggests that such birds are at considerable selective disadvantage.
Databáze: OpenAIRE