The great bustard is a bird in the bustard family, the only member of the genus Otis. It breeds in open grassland and farmland in southern and central Europe, and across temperate Asia. European populations are mainly resident, but Asian birds move further south in winter. Portugal and Spain now contain about 60% of the world’s population. It became extinct in Great Britain when the last bird was shot in 1832.
The huge adult male great bustard is possibly the heaviest living flying animal. A male is typically 2 ft 11 in–3 ft 5 in tall, with a length of around 3 ft 9 in and has a 6 ft 11 in–8 ft 10 in wingspan. The male can range in weight from 13 to 40 lb.