Nesting in large colonies makes great breeding grounds for parasites. Crested auklets produce a citrus-like odor that repels parasites. The theory follows that the stronger the odor, the better physical condition the bird is in, and thus, the better mate it will make.
Crested Auklet
Aethia cristatella
Fact File
Where to see them: Wings of the World
Length: 10.5 in
Habitat: Ocean and rocky ledges
Diet: Zooplankton
The Best Crest: During the breeding season, a crested auklet impresses its mate with a forward-curling crest of feathers atop its head.
