Bird nests are very different If guillemots lay eggs directly on bare ledges of rocks, for example, eagles build nests on the tops of mountains made of branches and twigs.
Purple swallow makes nests in hollow trees, away from people. And people often arrange for her special home like birdhouses or hung on the trees empty gourd with a hole for the entrance.
The outer wall socket Tits are constructed from thin tree branches, ferns, moss, lichens, and animal hair, inner - moss. Inside the nest is lined with feathers.
Birds ' nests:
1 - Remez, 2 - Orioles, 3 - Nightjar, 4 Chaffinch, 5 ducks, 6-Wren.