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,
Twycross Zoo all four types of great ape: gorilla, orangutan, chimpanzee and bonobo, the latter being the only bonobos in the country. The zoo currently houses four orangutans, five gorillas, 20 chimpanzees and 13 bonobos. Twycross Zoo has one of the largest collections of gibbons in Europe, and 37% of their animal collection is classed as near threatened, vulnerable, endangered or critically endangered by the IUCN. Many of the animals at Twycross Zoo are part of conservation breeding programmes which help ensure a future for species threatened with extinction. The animal exhibits at Twycross Zoo are split into eight zones: Conservation Way