we 
YELLOW OR ORANGE CONSPICUOUS 545 
680. MACGILLIVRAY WARBLER. — Geothlypis tolmiei. 
Famity : The Wood Warblers. 
Length: 5.00-5.75. 
Adult Male: Head, throat, and breast slate-gray ; throat feathers mar- 
gined with gray ; rest of under parts yellow ; lores black ; a distinct 
white spot on each eyelid; back olive-green, sometimes merging to 
grayish olive. 
Adult Female: Similar to male, but crown, hind-neck, and sides of head 
and neck mouse-gray, fading to grayish white on throat and breast. 
Young: Similar to adults, but plumage softer ; throat, chest, and spots 
on eyelids yellowish ; streak over lores pale yellow. 
Geographical Distribution: In the mountainous regions of Western North 
America, from the east slope of the Rockies to the Pacific, north 
to British Columbia, south in winter to Panama. 
California Breeding Range: Through Transition zone along the Sierra 
Nevada from Mt. Shasta to the San Bernardino mountains. 
Breeding Season: May 15 to June 15. 
Nest ; Of dried grasses ; lined with finer grasses and horsehair ; placed 
in weeds, bushes, or low shrubs, 1 to 6 feet from the ground. 
Eggs: 3 to 5; creamy white, marked near the larger end with spots and 
pen lines of dark brown and lilac gray. Size 0.72 X 0.52. 
In the chaparral and underbrush ; in ravines where 
small brooks wind in and out, their borders fringed 
with thick bracken; on the scrubby hillsides, — the 
Macgillivray Warbler hides shyly among the low foliage, 
or sings an odd little trill as you pass. These are his 
chosen haunts, and here among the ferns he will build 
a dainty nest so carefully hidden and so closely guarded 
that only by accident can you discover it. And if you 
do chance to locate it and part the ferns the least bit to 
peer into it, unless the eggs are nearly ready to hatch 
they will be abandoned by the timid Warblers and your 
opportunity to see a brood develop will be lost. Under 
these circumstances it is small wonder that little is 
35 
