BIRD OF THE WEEK / WEEK 32: August 6, 2018

© Liron Gertsman

Bird

Yellow-rumped Warbler

Species Name

Setophaga coronata

Appearance

12-15 cm length | 19-24 cm wingspan | 10-18 gm weight

A small, slender passerine with long, pointed wings and a long, forked tail.

Breeding males are blue-grey above and white below. They have black streaking on the back and breast and the wings are dark with white wing bars. The bill, eyes and legs are black. The breeding male has bright yellow on the crown, flanks and rump. The Audubon’s warbler has a yellow throat, while the myrtle warbler has a white throat, white eye stripe and a black mask. Goldman’s warbler is black instead of grey. Females are similar in markings but more brown than grey or black.

Habitat / Behaviour

Insectivore | Woodland

They nest in stands of aspen, birch or willow, within mature mixed or deciduous woodlands. In North America they winter among semi-open woods, in parks, along creeks and in residential areas. Birds that winter in the tropics inhabit mangroves, coffee plantations and coniferous forests. They are the most abundant neotropical migrants in North America and have the most widespread winter range of any warbler species in the world.

Typical insect fare include ants, beetles, gnats, caddisflies, craneflies, aphids, caterpillars and spiders. When insects are unavailable, they will eat fruit including wax-myrtle berries, juniper berries, dogwood, poison ivy and grapes.

Breeding

Monogamous | Cup-shaped nest in a tree | 4-5 eggs