Parent-offspring cooperation in the blue-footed boody (Sula nebouxii): social roles in infanticial brood reduction

Mascarell camablau

El mascarell camablau (Sula nebouxii) és un ocell marí originari de les regions subtropicals i tropicals de l'oceà Pacífic oriental.

Angsa batu kaki biru

Blue-footed booby

The blue-footed booby (Sula nebouxii) is a marine bird native to subtropical and tropical regions of the eastern Pacific Ocean.

Dominance hierarchy

Dominance hierarchy arises when members of a social group interact, often aggressively, to create a ranking system.

Regurgitation (digestion)

Regurgitation is the expulsion of material from the pharynx, or esophagus, usually characterized by the presence of undigested food or blood.