This western representative of the genera is the most terrestrial of the group, finding its food almost exclusively on the ground. Tho preferring deep thickets, its habits do not differ materially from the Mourning Warblers.
Discovered in 1839 by Townsend who named it after his friend Tolmie, when the former's collection came into Audubon's possession that eminent poseur promptly renamed after his friend Macgillivray — an unfair action which succeeding Solons have seen fit to perpetuate.
Margaret Wythe: To sum up the important points I learned in regard to the nesting of this family of TOLMIE WARBLERS: The nest was discovered on June 13, 1915, and at the time of finding contained four, probably fresh, eggs; two eggs were hatched on June 23, eleven days after the discovery of the nest; a third egg hatched on June 24, twelve days after the discovery of the nest; the fourth egg proved infertile; the three young birds left the nest on July 2, nine and eight days respectively, after hatching.
Western United States and British Columbia, east to Rocky Mountains, south to Arizona, New Mexico and western Texas.