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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: Galapagos_0004.jpg
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Keywords:
Fish
Equador
Galapagos
Water
Female
Bird
Ocean
Frigate
Plumage