Blue Wildebeest
Connochaetes taurinus
Nairobi National Park, Kenya. Dec. 2014. Notice the power lines in the background.
From Wikipedia: This broad-shouldered antelope has a muscular, front-heavy appearance, with a distinctive robust muzzle. Young blue wildebeest are born tawny brown, and begin to take on their adult colouration at the age of two months. The adults' hues range from a deep slate or bluish gray to light gray or even grayish-brown. Both sexes possess a pair of large curved horns. The blue wildebeest is a herbivore, feeding primarily on the short grasses. It forms herds which move about in loose aggregations, the animals being fast runners and extremely wary.