The kori bustard is Africa's heaviest bustard. Slideshow images 6 - 9 are of males displaying showing puffed necks and raised tails with fluffy undertail coverts. Images 10 - 19 show an adult and 2 immatures, first crossing grassland, then eating from the surface of small acacia trees. First, the adult appears to scrape something from the bark as the immature watches. Then the immature moves to a different tree and follows the adult example. Image 26 shows an adult on its knees about to drink from a rainwater pool.