this bright golden warbler sings from high in the trees. It is unique among eastern warblers in its habit of nesting in holes in trees, rather than in the open; it will sometimes nest in birdhouses ...

The prothonotary warbler is the only warbler that nests in small tree cavities. They make use of cavities that downy woodpeckers or black-capped chickadees have excavated. They will also occupy ...

Prothonotary warbler is the only warbler in Canada that nests in small tree cavities. It makes use of cavities that downy woodpeckers or black-capped chickadees have excavated, and will also readily ...