Singing males are generally easy to see in a variety of habitats, from open coniferous forests to montane riparian areas. The black-headed is insectivorous during the nesting season and then ...

Breeding: northern boreal and mixed forest, and montane coniferous woodland. Migration: in spring, generally arrives earlier than other warblers, returning to northern breeding areas by late April.

Ecosystems investigated include temperate deciduous and mixed coniferous forest (Montane US), grassland/forest ecotones (front range CO), mediterranean chaparral and grassland (CA), and high elevation ...