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 ...

TICEHURST has for long been recognized as an authority on the willow-warblers, and this critical ... By his determination, there are thirty species in the genus and these comprise, in all, sixty ...

Many warbler species glean insects from treetops and dense foliage, so they arent interested in an exposed feeder. Which ...

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 ...

Although variable, all yellow-rumped warblers possess a bright yellow rump, which is shared with only 2 other species. The yellow-rumped’s unique ability to digest the waxes in bayberries allows ...