Great bustard it well camouflaged in open habitats. Immature birds resemble the female. The eastern subspecies ("O. t. dybowskii") is more extensively grey in colour in both sexes, with more extensive barring on the back. The great bustard has long legs, a long neck and a heavy, barrel-chested body. It is fairly typical of the family in its overall shape and habitat preferences. Three other bustard species overlap in range with this species: the Macqueen's ("Chlamydotis macqueenii"), houbara ("Chlamydotis undulata") and little bustards ("Tetrax tetrax"). However, none of these attains the plumage coloration nor approach the body sizes of this species. Thus,
Ben 10: Secret of the Omnitrix one Ben destroyed during his battle with Animo. Tetrax is disappointed that Ben will continue being a hero and he begins to accept Ben. The Tennysons' hope of having a normal day of recreation, however, is dashed by a newsflash of 'zombies' attacking the mall, leading them to rush to the rescue calling this a normal life for the Tennysons. "Ben 10: Secret of the Omnitrix" was released three different times, each featuring a different alien destroying Animo's DNA bomb. Ben uses Heatblast in the first, a new form called Eye Guy in the second, and XLR8 in the third.