Cleanliness is next to sexiness for golden-collared manakins in Panama

(Smithsonian Tropical Research Institute) Juvenile male Golden-collared Manakins on extra testosterone cleaned up their display area before performing for females, according to research at the Smithsonian Tropical Research Institute (STRI) in Panama published in Animal Behavior. Female manakins got more aggressive when given testosterone.

from EurekAlert! - Social and Behavioral Science http://ift.tt/2gvzbWt