Ohh, these are so fun!  Here are my tree habitats with nests.

Here's how to make a simple nest:
Wrap a piece of brown tissue paper around your thumb.

Glue with a glue stick.  Presto! A Nest!
Owl Habitat
Owls can live in tree trunks and tree holes.  They will make a nest.
Draw paper owls and owlets.

Bird Habitat
Draw paper birds and eggs!
I ask the children to draw what the bird or owl eats and place it in their habitat.  This takes this to a story telling habitat that the children can tell their families the life cycle of a bird or owl or whatever!

Have fun!