Blackburnian Warbler vs Chestnut-sided Warbler

In short

The Blackburnian Warbler and Chestnut-sided Warbler can be distinguished by their distinct plumage patterns and habitat preferences. Blackburnian Warblers are known for their striking orange throat and face, while Chestnut-sided Warblers have a distinctive chestnut-colored flank. Both species are found in different forest types during the breeding season.

Identification tips

• Look for the orange throat and face of the Blackburnian Warbler, especially in males.
• Note the chestnut flanks and yellow crown of the Chestnut-sided Warbler.
• Consider the habitat: Blackburnian in coniferous forests, Chestnut-sided in deciduous or mixed forests.
• Listen for the distinctive songs: Blackburnian's rising notes versus Chestnut-sided's 'pleased to meetcha.'

Size

Both species are similar in size, typical of small warblers.

Plumage

The Blackburnian Warbler features a vibrant orange throat and face with black streaks on the back and wings. In contrast, the Chestnut-sided Warbler displays a white face and underparts with a prominent chestnut stripe along its flanks and a yellow crown.

Behaviour

Both species are active foragers, often seen gleaning insects from foliage. The Blackburnian Warbler tends to forage higher in the canopy, while the Chestnut-sided Warbler is more often found in lower vegetation.

Habitat

During the breeding season, Blackburnian Warblers prefer coniferous forests, especially hemlocks, while Chestnut-sided Warblers are more common in deciduous and mixed forests, often in regenerating or disturbed areas.

Voice

The Blackburnian Warbler's song is a high-pitched series of notes that rise in pitch, while the Chestnut-sided Warbler's song is often described as 'please, please, pleased to meetcha.'