Bustard
2 of the 7 encyclopedias on this shelf carry an entry for Bustard. Both are reproduced below, so you can see where they agree and where they differ.
Aiton's Encyclopedia (1910)
busterd, a family of game birds, somewhat resembling the turkey in appearance, but classified between the plover and the crane. There are several species, found throughout Africa, about the Mediterranean, and eastward in southern Asia, as far as Japan. The common bustard ranges along the northern shore of the Mediterranean and as far east as the open steppes of Tartary. It haunts inland plains and desert regions. It has strong, naked legs and feet and is a good flyer. It is a handsome bird with ornamental chestnut plumage, varied with black and white, and is not unlike a grouse in habits. The great bustard attains a weight of thirty pounds. An allied species is the so-called wild turkey of New South Wales . Bustards were at one time numerous in Yorkshire and on Salisbury Plain, but the last English birds were seen about 1838. 2026 Editor's Note: The great bustard is the heaviest bird capable of flight, males reaching over forty pounds. Britain shot its last one in 1832 — and then brought it back: since 2004 chicks from Russia and Spain have been released on Salisbury Plain, where a small wild population now breeds again for the first time in nearly two centuries. (Ed: BR 2026-06-24)
Collier's New Encyclopedia (1921)
the name of a genus of European birds, the otis, which is the typical one of the family otitidæ. The great bustard (O. tarda), the little bustard (O. tetrix), and Macqueen's bustard (O. macqueeni) are the best known species. The great bustard was formerly_common in Wiltshire and in Norfolk, England. It has the plumage on the back of a bright yellow traversed by a number of black bars, the rest of the LITTLE BUSTARD plumage being grayish. It runs and flies well. It is still common in parts of the European Continent. The little bustard (O. tetrix) is a Mediterranean bird. It is brown dotted with black above, and beneath is whitish. The male has a black neck with two white collars.