• A male great-tailed grackel ruffs out his plumage as he displays to nearby conspecifics. See ‘evolution of gestural displays’ under the research tab for more information about this and other forms of physically elaborate behavior.

  • A view inside the lowland Panamanian rainforest. Each year, me and members of my lab spend a few month here studying avian physiology and behavior.

  • An adult male red-capped manakin perched on his display branch. We use this species, as well as its other close relatives, to examine how the neuro-motor system evolves to support highly complex and acrobatic signaling behavior. See ‘neuro-motor control of display behavior’ under the research tab.

  • We also study a number of birds that live locally in North Carolina. For these projects, we study the hormonal control of aggression and plasticity in competitive behavior.