Big Bird

As part of Radio 4's Character Invasion, Chris Packham presents a unique Tweet of the Day to tell the story of Big Bird.

Avis giganteus, is , as its scientific name suggests, a large, conspicuous and highly vocal species, and one of the few birds for which binoculars are redundant. At a staggering 249 cm high, it is over-topped only by the male ostrich. But while the ostrich is an athletic creature of wild open spaces, our bird is a denizen of urban thoroughfares and film studios.