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,
San Diego Zoo public. The program runs year round in two sessions, one from May through November and one from January through May. Members of the Zoo Corps are expected to volunteer at least once a month. The program utilizes a series of "Kits", which are set on tables throughout the zoo. The kits contain objects that can be used to explain why an animal is endangered or to shed light on the animal's lifestyle. Some of the kits are: Conservation Kit, Endangered Species Kit, Behavioral Enrichment Kit, and Animal Diet Kit. Local architect Louis John Gill designed the original buildings, cages and