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

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

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

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Bird Habitat
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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!