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 ...

We expect tropical animals to handle a certain degree of heat, but not wild swings in temperature. That seems to be true for tropical ectotherms, or 'cold-blooded' animals such as amphibians, reptiles ...