Field Guide

Northern Yellow Warbler

Setophaga aestiva

Aves › Passeriformes › Parulidae › Setophaga

Northern Yellow Warbler (Setophaga aestiva)
Photo: no rights reserved, uploaded by Mirko Schoenitz, cc0

The Northern Yellow Warbler is a small, bright yellow songbird with reddish streaks on its breast and an olive-green back that makes it one of the most vibrant warblers in North America. You'll recognize it by its distinctive chestnut markings on the crown and face, and its energetic "sweet-sweet-sweet-I'm-so-sweet" song that rings through willows and brushy wetlands.

How To Identify

It is a small, delicate songbird about 5 to 6 inches long. Males are immediately recognizable by their striking, vivid yellow plumage, which contrasts with its subtle gray back and dark streaking.

Habitat

It inhabits riparian woodlands, willow thickets, and shrubby areas near streams, marshes, and wetlands across North America.

Behaviour

Males sing persistently throughout the breeding season, with a bright, energetic song that sounds like 'sweet-sweet-sweet, I'm so sweet,' and they are highly territorial in defending nesting areas.

Native Range

The Northern Yellow Warbler is native to North America.

Did You Know?

Male Northern Yellow Warblers are known to destroy cowbird eggs laid in their nests and rebuild their nests on top of them, sometimes creating nests with up to six layers of construction. This remarkable behavior demonstrates their determination to protect their offspring from brood parasitism.

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