01 JAN 2012 by ideonexus

 The Arctic Tern's Migration

The difference between night and day is dramatic - so dramatic that most species of animal can thrive either in the day or in the night but not both. They usually sleep during their 'off' period. Humans and most birds sleep by night and work at the business of living during the day. Hedgehogs and jaguars and many other mammals work by night and sleep by day. In the same way, animals have different ways f coping with the change between winter anc summer. Lots of mammals grow a thick, shaggy ...
Folksonomies: migration bird arctic tern
Folksonomies: migration bird arctic tern
  1  notes

The bird migrates back and forth from North and South poles so that it always enjoys the arctic and antarctic summers.