Sofia Zoo marmoset, and macaques. The predator sector houses big cats, bears and small predators, including lions, tigers, leopards, pumas and brown bears. In January 2011 the zoo received eight Humboldt penguins on loan from Germany. The penguins are on loan for about 18 months, after which they will be returned, with any offspring to stay at the zoo. The zoo has some 1,400 individual birds representing 192 species. Waterbirds are housed in a lake, and Imperial eagles, Griffon vultures, Egyptian vultures and buzzards in a large walk-through aviary. Other species of birds at the zoo include ostriches, Silver pheasants, peacocks, flamingos,
Bronx Zoo sits atop the Rainey Memorial Gates. In 1916, the zoo built the world's first animal hospital located at a zoo. In 1937, the zoo became the first in North America to exhibit okapi. In 1960, the zoo became the first in the world to keep James's flamingo, a species which had been thought to be extinct until 1957. They were imported along with the similar Andean flamingo. The zoo was one of the few in the world to exhibit proboscis monkeys outside of Southeast Asia and, in the 1976 International Zoo Yearbook, the zoo reported having eight monkeys, seven of