Laughing kookaburra recognised: The laughing kookaburra is the largest kingfisher. It is a stout, stocky bird in length, with a large head, prominent brown eyes, and a very large bill. The sexes are very similar, although the female is usually larger and has less blue to the rump than the male. The male weighs and the female . They have a white or cream-coloured body and head with a dark brown stripe across each eye and more faintly over the top of the head. The wings and back are brown with sky blue spots on the shoulders. The tail is rusty reddish-orange
The Life of Birds possibly show paths this evolution may have taken. One of the biggest birds to have ever existed was the terror bird, which proliferated after dinosaurs vanished and stood up to 2.5 metres tall. By comparison, the ostrich, while not closely related, is the largest and heaviest living bird. It was probably the evasion of predators that drove most birds into the air, so their flightless cousins evolved because they had few enemies. Accordingly, such species are more likely to be found on islands, and Attenborough visits New Zealand to observe its great variety, most especially the kiwi. Also depicted is