General
Mourning Warbler: Medium-sized warbler with olive-green back, wings, and tail, and gray hood. Underparts are yellow; upper breast is black. Female is much duller, has faint eye-ring, and lacks black breast. Juvenile has much duller hood.
Range and Habitat
Mourning Warbler: Breeds from Alberta to Newfoundland and south to North Dakota and northern New England, and in mountains to Virginia. Spends winters in the tropics. Preferred habitats include dense thickets of blackberries and briars in forest clearings; also wet woodlands with thick undergrowth.
Breeding and Nesting
Mourning Warbler: Three to five brown-spotted, white to creamy white eggs are laid in a nest made of fibers and leaves, lined with grass and hair, and built on or near the ground. Eggs are incubated for 12 days by the female.
Foraging and Feeding
Mourning Warbler: Eats insects and spiders; gleans food from foliage.
Readily Eats
Sugar Water, Fruit, Nut Pieces
Vocalization
Mourning Warbler: Emits a loud, ringing, musical song "teedle-teedle, turtle-turtle", with the last pair of notes lower.
Similar Species
Mourning Warbler: Connecticut Warbler is larger, has longer bill and distinct buff to white eye-ring.