The direction and range of ambient temperature change influences yawning in budgerigars (melopsittacus undulatus).
Gallup, Andrew C., Miller, Michael L., Clark, Anne B.Volume:
124
Year:
2010
Language:
english
Journal:
Journal of Comparative Psychology
DOI:
10.1037/a0018006
File:
PDF, 60 KB
english, 2010