Few subjects in evolutionary theory have posed such intriguing puzzles for so long as the origin of birds. Evidence of avian ... its jawbone and teeth were like those of a small dinosaur, and ...

Humans do not have tails, but do we have “what it takes” for a tail? Hens don’t have teeth, but they have the genes for it. With atavism, it is as if our genomes serve as archives of our ...

Birds also have beaks instead of teeth. Around the world, birds come in many different colours, shapes and sizes from shoebills to the tiny humming bird. Here in the UK, the Robin is a bird you ...