The Gray Flycatcher 
rence of this bird in California, save those concerned with the valleys of the San Diegan 
district, the desert lowlands, and the valley of the Colorado River. Careful study of 
the last-named region in the winter and spring of 1910 showed the Gray Flycatcher as a 
characteristic winter resident, and raised the question whether we have here an example 
of reverse migration—Mexican birds coming north to winter—or whether there is 
still, in the ever hospitable north, some breeding area large enough to cradle, all unrec¬ 
ognized by man, this bird of mystery. 
By every analogy E. griseus should have characteristic notes which would give 
us the clue to field recognition and enable us to unravel the tangled web of relationship 
which involves hammondi, wrighti, and griseus; but no one has yet reported on the 
vocal distinctions, if they exist. 
So ran the legend as penned in 1916 and intended for this work. To this I am 
able to append the following bulletins: 
Taken in Mono County Photo by the Author 
NESTING HAUNT OF GRAY FLYCATCHER 
THE GROPINGS and conjecturings of Science-in-the-making afford 
amusing reading after the clew is found. We are not out of the woods 
yet, but the timber is thinning. The Gray Flycatcher is beginning to 
take on the semblance of reality. 
On the 2nd of June, 1919, while we were pausing in a heavy stretch 
of mingled greasewood (Sarcobatus vermiculatus ) and sage (.Artemisia 
tridentata), at a point due west of the Mono Craters, a member of our 
M. C. O. party found a “Wright” Flycatcher’s nest, with three eggs, in 
a sage-bush. A few minutes later another collector found an incomplete 
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