Foraging Behaviour and Food of Grey HeronsArdea cinereaon the Ythan Estuary

Autor: D. C. Cook
Rok vydání: 1978
Předmět:
Zdroj: Bird Study. 25:17-22
ISSN: 1944-6705
0006-3657
Popis: Observations of feeding Grey Herons on the Y than indicate that firstyear birds are less efficient than adults at foraging for food. Smaller fish (under 150mm in length) are often swallowed alive, and flatfish (the chief prey there) are sometimes caught by being stabbed with one or both mandibles.
Databáze: OpenAIRE