This warbler is named in honor of William MacGillivray, who
edited and reworked the manuscript of Audubon's classic work.
Another Scotsman, William Tolmie, is remembered in this bird's
scientific name. Tolmie spent his adult life on the North
American Pacific coast, where he undoubtedly encountered this
warbler. Feeds on insects. General: 5 to 5.75 inches in length.
Male Alternate: Olive-green upperparts. Yellow underparts. Gray
head and neck. Black lores and breast patch. Broken, white eye
ring. Pink legs. Small, pointed bill. Male Basic, Female,
Immature: Olive-green upperparts. Yellow underparts. Pale gray-
brown head and neck. Yellow wash on throat. Broken, white eye
ring. Pink legs. Small, pointed bill. Thickets in broadleaf and
riparian woodlands. 3-5 white eggs with brown spots. The eggs
have an 11 day incubation period. Fledging occurs in ? days. The
female incubates the eggs. The nest is a small open cup made
from weeds and grasses, which is built in a low tree or shrub.