The Field Sparrow
Spizella pusilla, is a small sparrow.
Adults have brown upperparts,
a light brown breast, a white belly, wing bars
and a forked tail. They have a grey face, a
rusty crown, a white eye ring and a pink bill.
Their breeding habitat is shrubby
fields across eastern North America. The nest
is an open cup on the ground under a clump of
grass or in a small thicket.
These birds are permanent residents
in the southern parts of their range. Northern
birds migrate to the southern United States
These birds forage on the ground
or in low vegetation, mainly eating insects
and seeds. They may feed in small flocks outside
of the nesting season.
The male sings from a higher perch,
such as a shrub or fencepost, to indicate his
ownership of the nesting territory. The song
is a series of sad whistles ending in a trill.
This bird's numbers expanded as
settlers cleared forests in eastern North America,
but may have declined in more recent times.
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