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GadflyRelated Category: Zoology: Invertebrates name for various biting flies, especially those that attack livestock, e.g., the botfly and the horsefly.
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The gadfly petrels are seabirds in the bird order Procellariiformes. These medium to large petrels feed on food items picked from the ocean surface.
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The Bonin Petrel breeds farther north than any other Pterodroma, or gadfly petrel, in the Pacific Ocean.
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The Bermuda Petrel (Pterodroma cahow), is a gadfly petrel. It is commonly known as the Cahow in Bermuda. It is the national bird of Bermuda as well. It is a symbol of hope for natural conservation.
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Holding its wings in a sickle shape and flying erratically in heavy winds, the Black-capped Petrel is typical of the gadfly petrels.
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Most petrels breed in colonies on islands in the southern hemisphere. A few of the gadfly petrels breed farther north on islands such as Madeira, Bermuda, the West Indies, and the Hawaiian Islands.
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Brooke, M.de L. (1995) The breeding biology of the gadfly petrels Pterodroma spp. of the Pitcairn Islands: characteristics, population sizes and controls. Biol. J. Linn. Soc. 56: 213-231.
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 See also: Petrel, Shearwater, Albatross, Seabird, Puffin
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