Great Frigatebird

Great Frigatebird (Fregata minor) chick.  Frigatebirds are light, weighing between 1–1.8 kg (2.2–4 lb), and have the highest ratio of wing area to body mass, and the lowest wing loading of any bird. This has been hypothesized to enable the birds to utilize marine thermals created by small differences between tropical air and water temperatures. Juveniles are black with a rust-tinged white face, head and throat. Galapagos Islands.

Great Frigatebird (Fregata minor) chick. Frigatebirds are light, weighing between 1–1.8 kg (2.2–4 lb), and have the highest ratio of wing area to body mass, and the lowest wing loading of any bird. This has been hypothesized to enable the birds to utilize marine thermals created by small differences between tropical air and water temperatures. Juveniles are black with a rust-tinged white face, head and throat. Galapagos Islands.

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