an Entity references as follows:
The great bustard (Otis tarda) is a bird in the bustard family, the only member of the genus Otis. It breeds in open grasslands and farmland from northern Morocco, South and Central Europe, to temperate Central and East Asia. European populations are mainly resident, but Asian populations migrate farther south in winter. It has been listed as Vulnerable on the IUCN Red List since 1996.