Sparrows and breeding

A short introduction to this album.

Transcript -- A short introduction to this album.

Exhibits at the Natural History Museum in Tring reveal a striking shared ancestry between the hippo and the dolphin.

Transcript -- Exhibits at the Natural History Museum in Tring reveal a striking shared ancestry between the hippo and the dolphin.

Darwin's study of the bizarre results of artificial breeding of pigeons shed light on evolutionary processes.

Transcript -- Darwin's study of the bizarre results of artificial breeding of pigeons shed light on evolutionary processes.

Dogs used to be bred for their ability to help humans. Now selective breeding accentuates physical features at the expense of ability to survive in the wild.

Transcript -- Dogs used to be bred for their ability to help humans. Now selective breeding accentuates physical features at the expense of ability to survive in the wild.

How differences in 'badge' sizes between males relates to success at finding food and rearing young.

Transcript -- How differences in 'badge' sizes between males relates to success at finding food and rearing young.