Zoo staff make the journey to east Africa to return to the wild thousands of toads they helped rescue from extinction; Utu, the test-pilot giraffe, tries out a new piece of equipment; the bird department works to save the lives of millions of birds.
Zoo staff make the journey to east Africa to return to the wild thousands of toads they helped rescue from extinction; Utu, the test-pilot giraffe, tries out a new piece of equipment; the bird department works to save the lives of millions of birds.