ground roller

ground roller

noun
Madagascan roller with terrestrial and crepuscular habits that feeds on e.g. insects and worms 
WordNet® 3.0, © 2006 by Princeton University.
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Encyclopedia Britannica
Encyclopedia

ground roller

any of five species of pigeon-sized birds that comprise the family Brachypteracidae (order Coraciiformes) known for their tumbling flight. They are found only in Madagascar. Four species inhabit deep forest; one, the long-tailed ground roller (Uratelornis chimaera), confined to a small desert in southwestern Madagascar, is nearly extinct. Ground rollers range from 30 to 40 centimetres (12 to 16 inches) in length

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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