To know what a tropical bird is, you first have to know where the tropics are. The tropics form a band around the equator bordered by the Tropic of Cancer in the north and the Tropic of Capricorn in ...

Tropic of Cancer is a BBC television documentary presented by Simon Reeve. It was first broadcast on BBC Two in 2010. It follows his previous series Equator and Tropic of Capricorn.