Fregatidae - Frigatebirds
Frigatebirds are highly maneuverable aerial predators of tropical waters. The five species all breed in large colonies in trees on tropical islands. During courtship the males (which are mostly black) extend a large, vivid scarlet throat pouch to attract a mate.
Only two individuals have wandered as far north as Britain a single Ascension Island Frigatebird and, more recently, a Magnificent Frigatebird.
Seabird ID (2 sessions, Tuesdays 10am)
This course involves two weekly online sessions of 100 minutes, with a trainer:participant ratio of about 1:30. Participants' microphones are muted during the sessions but there is a large interactive component, using...
Too wet to nest?
A common issue that many analysts of biological data encounter is that of detectability. For a human population we can (in principle) count every individual. For wildlife though, things are trickier, and only rarely is...
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