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The Black-throated Green Warbler has olive-green upper parts and crown, black throat and sides of the chest, and a bright yellow face. Females are similar, but duller. They have pleasant and easy to learn songs, consisting of a thin buzzy “zeer-zeer-zeer-zeer-zee”, as well as a faster “zee-zee-zee-zoo-zee”.
Their preferred habitat is stands of Eastern Hemlocks, found in Algonquin Highlands’ hardwood forests. After migration, males return a week before females, and set up their territories out of the area available. Winters are spent in the south.
Nests are located high in the branches of a conifer, up to 24 metres above the ground. They consist of grass, moss, and plant fibers, and are lined with hair and feathers. The Black-throated Green Warbler will lay four or five eggs, the maximum number that they can feed to an adequate weight. This limit of eggs helps species to secure better chances of survival for their young.
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BLACK-THROATED GREEN WARBLER
Dendroica virens
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