OLIVE WARBLER m 



fourth to seventh primaries white on outer web at base, greater and median 

 coverts broadly tipped with white; center of belly white, sides gray. 



Adult , Fall. Similar to adult d 1 in Spring but head and neck duller, 

 back more olive, sides browner. 



Young <$, Fall. Not distinguishable from young ? in Fall. 



Young 3, Spring. Not distinguishable in color from adult $ in Spring, 

 the adult plumage evidently not being acquired until the second Fall, at least. 



Adult ., Spring. Crown and nape dull olive-yellow, a broad dusky band 

 through the eye; back olive-gray; basal half of outer web of outer tail-feather 

 white, inner web largely white, next feather sometimes with white on the inner 

 web; wings as in c? but white areas smaller; throat and breast dull yellowish; 

 belly white, sides gray. 



Adult ?, Fall. Similar to adult $ in Spring but crown tipped with grayish, 

 the throat and breast with buffy, the sides, with brownish; white tips to 

 greater wing-coverts with some yellowish. 



Young ?, Fall. Similar to adult $ in Fall but crown and nape grayer; 

 ear-coverts duskier, throat and breast paler. 



Nestling. Above dusky olive-brown, a buffy postocular mark passes behind 

 the auriculars to the side of the throat; greater wing-coverts tipped with yel- 

 lowish, median coverts, with white; throat and breast buffy or pale greenish; 

 belly white, sides brownish gray. 



General Distribution. Breeds from Guatemala north to southern 

 Arizona. Winters in the highlands of Mexico and Guatemala. A 

 few may winter in southern Arizona, as one was taken there February 



21. 



Migration. The arrival of the first was noted April 6, 1902, in 

 the Huachuca Mountains, Arizona. 



The Bird and its Haunts. This species was first definitely 

 recorded from the United States by H. W. Henshaw who secured 

 three specimens, on Mt. Graham, Arizona, in September, 1874. 

 In March, 1880, Stephens, as quoted by Brewster 1 , found it 

 apparently not uncommon in the Chiricahua Mountains, where, four- 

 teen years later, Price 2 first discovered it nesting. Three nests were 

 subsequently taken by Howard 3 in the Huachuca Mountains, making 

 a total of four which have thus far been recorded. 



The Olive Warbler is a bird of open pine forests where in general 

 habits it reminds one strongly of the Pine Warbler. During the last 

 week in April, 1897, I found it to be an abundant inhabitant of the 

 pines at Las Vigas, in the state of Vera Cruz, Mexico, at an altitude 

 of 8,000 feet. Young of the year were already on the wing. It fed 

 leisurely among the terminal branches creeping or hopping along 

 the twigs without displaying the activity of the fluttering Warblers. 

 Occasionally it descended to the ground for food, but I do not recall 

 seeing it cling to the trunk of a tree as a Pine Warbler does at times. 



