Still, many known theropods had big legs, short arms, and stout, long tails ... birds. All the feathers on a developing chick begin as bristles rising up from its skin; only later do they split ...

An experienced fossil hunter, Li split the slab and beheld ... and earliest pygostyle, or fused tail vertebrae that supported feathers, truly looks like a bird. "It passes the sniff test," Carrano ...

The western tragopan is a scarce, shy, and elusive bird. Males are as beautiful to ... He deploys his finery: His head sprouts blue horns, his tail feathers fan, his rainbow wattle unfurls.

published by Chronicle Books 2016 This tail feather comes from a male red bird of paradise. Feathers: Displays of Brilliant Plumage by Robert Clark, published by Chronicle Books 2016 The male and ...