Birdsong field guide
Lesser Frigatebird
Fregata ariel
The smallest of the frigatebirds, this highly aerial seabird is known for its forked tail and inability to land on water. It is a master of the tropical skies, often seen harassing other birds for food.
What it sounds like
Generally silent at sea; at breeding colonies, males produce a variety of drumming, rattling, and high-pitched whistling sounds during display.
Reference call, compare with what you heard
No reference call found yet · Xeno-canto
Field notes
- It is the smallest member of the Fregatidae family, with a wingspan of approximately 175 to 193 cm.
- Males feature a large, inflatable red gular pouch used in elaborate courtship displays to attract females flying overhead.
- Lacking waterproof plumage and functional webbed feet, it avoids the ocean surface and feeds primarily by snatching prey or practicing kleptoparasitism.
- Diagnostic white 'axillary spurs' extending onto the underwing coverts distinguish both females and juveniles from the similar Great Frigatebird.
- Despite their pelagic lifestyle, they have one of the longest periods of parental care of any bird, with chicks remaining dependent for up to a year.
Habitat
Tropical and subtropical pelagic waters, nesting on remote oceanic islands, coral cays, and in mangroves or low bushes.
Range
Widespread across the Indian and Pacific Oceans, with a small, isolated population in the South Atlantic off the coast of Brazil.
Similar & commonly confused birds
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