Black-capped Chickadees Nest Building

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The
female of a pair of black-capped chickadees usually selects the nest site, as
well as builds the nest, but both the male and female excavate the cavity in
which the nest is built.  Because they
lack the strong beak of a woodpecker or even a nuthatch, chickadees usually
make their nests in rotting trees or snags that have punky wood which is very
easy to remove.  Birch is the tree of
choice when it comes to choosing a nest site, followed by aspen and sugar
maple.

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