The OLIVE WARBLER is said to resemble the Pine Warbler in its slow, rather deliberate, habits. Chapman found it very abundant among the pines at Las Vigas in the State of Vera Cruz, Mexico, at an altitude of eight thousand feet, in company with young of the year, feeding leisurely among the branches, some occasionally descending to the ground for food. Stephens found it not uncommon in the Ghiricahua Mountains, and Henshaw secured three specimens on Mount Graham, Arizona, in September, 1874. It is apparently a rare bird in the United States.
Howard states the nests are very beautiful affairs, built like those of the Bluegray Gnatcatcher, of moss, lichens, fir blossoms and spider webs, with a lining of fine rootlets and located on a horizontal pine limb or in a fork of a red fir from thirty to fifty feet above ground.
EGGS: Four: sage green, heavily blotched and spotted with sepia and light shades of drab and olive-gray. In coloring, unique among the Warblers.
White and Huachuca Mountains of Arizona and in mountains of southern New Mexico.
A short tree, averaging 15 feet high, distributed in limestone soil from Rio Blanco Valley west to Guadalupe and Eagle Mountains, Texas.