Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...
Forty million years before the first dinosaurs evolved ... And at that time, the Earth was nearing the end of an ice age. The swampy land near the equator was drying up and becoming more forested ...
Native birds responded to the Ice Age in a variety of ways. Kiwi populations became so isolated in forest patches they split into new lineages. Several moa species moved across the landscape ...