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The throat sac of male frigate birds can be inflated with air and is used to impress the females, both visually and by helping to resonate the loud rattlings and yodels of courting males. Galapagos, Equador.
The throat sac of male frigate birds can be inflated with air and is used to impress the females, both visually and by helping to resonate the loud rattlings and yodels of courting males. Galapagos, Equador.
Filename: Galagpagos_0006.jpg
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Keywords:
Equador
Bird
Female
Galapagos
Frigate
Ocean
Fish
Plumage
Water