Sandgrouse are known as fossils of the genus Archaeoganga from the Upper Eocene of France, some 35 million years ago, one species of which is estimated to have been about three times the size of the largest living sandgrouse species, weighing perhaps 3 lb (nearly 1.5 kg). Other fossil genera occur into the Lower Miocene, about 20 million years ago.

May 18, 2018 · Pteroclidae (sandgrouse; class Aves, order Columbiformes) A family of medium-sized birds which have brown and grey, barred, spotted, and mottled upper-parts, yellow, chestnut, white, and black under-parts, and face markings. They have short, conical bills, short necks, long, pointed wings, and a medium to long tail.

Sandgrouse are generally found in large flocks that can include several hundreds or even thousands of individuals. Because sandgrouse occupy desert habitats, they generally forage, or search for food, during the cooler hours of the day. During the breeding season, sandgrouse are monogamous (muh-NAH-guh-mus), a single male mates with a single ...

MICHAEL ALLABY "Pallas's sandgrouse ." A Dictionary of Zoology. . Retrieved December 18, ...

ColumbiformesFamily: Pigeons and Doves Family: Dodos and Solitaires (Pigeons, doves, and dodos) Class AvesOrder ColumbiformesNumber of families 2Number of genera, species 40–45 genera; 300–320 species Source for information on Columbiformes (Pigeons, Doves, and Dodos): Grzimek's Animal Life Encyclopedia dictionary.

Sanderson, Ivan T(erence) (1911-1973) Scottish-born naturalist, traveler, collector and exhibitor of rare animals, radio and television commentator, and author.