18S7.J Scott on the Birds of Arizona. I*J 



earliest record), and becomes common during the ensuing week. The 

 latest record I have of it in the foothills proper (altitude, 400 feet) is Sep- 

 tember 5; but even by the 20th of August they begin to be uncommon at 

 this elevation. I found them late in April (April 19-24, 1SS5) rather 

 common up to about 9000 feet, but did not find them in the pine forests. 

 Two broods of from three to five young are generally raised each season, 

 the altitude of the nest from the ground varying greatly with the sur- 

 roundings, and the kind of tree is seemingly a matter of indifference. 



107. Tyrannus vociferans. Cassin's Kingbird. — Though doubtless 

 occurring as a migrant on the plains. I have records of this species only 

 from the foothills about Riverside and from the Catalina Mountains. It 

 does not, so far as I am aware, breed at so low altitudes as T. verticalis, 

 nor is it as abundant or so generally distributed in the breeding season as 

 that species. It arrives in the Catalina foothills late in March, my first 

 record, and that of but a single bird, being March 28th, 1885, at an alti- 

 tude of 3500. The general arrival for the same year and locality was 

 April 7. Pairing and mating was first noticed April 16, 1S85. At the 

 higher limits of its range in the breeding season — about 9000 feet — it is 

 much more common than T. verticalis, though the reverse is true as 

 regards the lower limit of its range — about 3500 feet — in the breeding- 

 season. Though arriving about the same time of year as T. verticalis. 

 all my observations lead me to believe that its stay in the mountains and 

 foothills is very much longer than that of its congener. At an altitude of 

 3500 feet, which is the extreme lower limit of the evergreen oaks, I found 

 T. vociferans not at all uncommon on October 9, 18S4, and my note book 

 bears constant record of its occurrence up to that time, while I find 

 nothing about T. verticalis later than early September in the same 

 region ; all these notes being made in the Catalina Mountains. 



Two broods of from three to five young are usually reared each season ; 

 and the position of many nests I have examined shows a decided 

 preference for the evergreen oaks over other trees. The nest, which is 

 commonly from twenty to twenty-five feet from the ground, is most always 

 placed near the extremity of a branch, and is sheltered and hidden by the 

 thick leaves. 



10S. Myiarchus mexicanus magister. Arizona Crested Fly- 

 catcher. — This species I have found to be common in spring and sum- 

 mer about Tucson, Florence, Riverside, and in the foothills of the Cata- 

 lina Mountains up to about 4500 feet, which is the extreme limit in alti- 

 tude indicated by my notes. It is as common at all these points as is 

 M. crinitus at any point where I have met with that species, and just 

 about Tucson, in the mesquite and giant-cactus groves, it is much 

 more abundant than is M. crinitus at any point in its habitat which I 

 have visited. In the Catalinas, altitude 4000, the species arrives about 

 April 20, and remains until late in August or early in September. I found 

 a nest at this point built in a deserted Woodpecker hole in a dead syca- 

 more stub. It was entirely similar in construction to that of M. crinitus, 

 even to the traditional snake skins, and contained five eggs nearly ready 



