Light enough to travel or wise enough to stay? Brain size evolution and migratory behavior in birds.
- Orsolya Vincze
Evolution 2016 09 22;70(9):2123-33. Epub 2016 Aug 22.
MTA-DE "Lendület" Behavioural Ecology Research Group, Department of Evolutionary Zoology and Human Biology, University of Debrecen, Debrecen, H-4032, Hungary.
Brain size relative to body size is smaller in migratory than in nonmigratory birds. Two mutually nonexclusive hypotheses had been proposed to explain this association. On the one hand, the "energetic trade-off hypothesis" claims that migratory species were selected to have smaller brains because of the interplay between neural tissue volume and migratory flight. Read More