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 46 T. HE CONDOR Vol. XIII nevertheless. Besides these there were the Mourning Dove, Say Phoebe, Ash- throated Flycatcher, Richardson Pewee, Woodhouse Jay, the Desert Sparrow, Gray Vireo, Gnatcatcher, and House Finch, one of whose nests was found' in a tree cactus. Later, in climbing the thousand foot bluff we found a family of Mexican Falcons near the top. With the additions thse birds made to our Pajarito list and a few others noted between camps there were about forty species. Considering the fact that they were confined to a narrow strip between broad plains on which the list of birds often consisted of two, sometimes of one species, the forty seemed a goodly number. And now, thinking back over towering cliffs enlivened by moving forms and hous- ing ancestral homesteads and of gulches and amphitheaters below ringing with joyous bird songs, this hr,,av'e Iittle band of forty peopling the juniper belt between silent plains seems to make the real oasis of the Llano. THE BLUE-THROATED HUMMINGBIRD ; By FRANK C. WILLARD WITH FOUR PHOTOS S I wander about among the canyons of the Huachuca Mountains, there are two places where I always listen for a "squeak-squeak-squeak" repeated every few minutes, the second fiote higher pitched than the first, and the third note lower than either of:he.. other two. These two places are in deep narrow can- yons. It was some ti .mebefore I was able to locate the author of the squeaks. Finally, I located a large.hummingbird, perched on a dead twig well up in a fir tree. Fig. 19. GREENHOUSE IN WHICH NEST OF BLUE-THROATED HUMMINGBIRD WAS BUILT; LOWER TIP OF NEST MAY BE SEEN WITHIN, BETWEEN CENTRAL PAIR OF SLATS, AT TOP