Hybridization is commonly observed between a number of warbler species and, while this does not make it easier to identify different species in the field, it opens up many opportunities to study the ...

These are probably the best known and most frequently encountered wood warblers. Although variable, all yellow-rumped warblers possess a bright yellow rump, which is shared with only 2 other species.

Even casual birders get excited during warbler migration season! Try these tips to identify the most warblers this spring.

This rather yellowish green warbler, named for its least conspicuous character, forages lower than many species. It lays 4 to 5 eggs (March–May in west, June in east) in its nest on or near the ...