Male phenotypes in the ruff. (Left) Independent ruff males interacting at a lek. (Right) A Satellite ruff male with pale ornamental feathers at a lek. Photos courtesy of Tom Schandy. Ruff males have ...
There are three morphs in ruffs that differ in their appearance and mating behavior. Males of the aggressive Independents (left) have more testosterone in their blood than the other two morphs (a male ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results