Early in 1881 I wrote to Mr. Stephens asking him to get me some Arizona birds during the following spring and summer. He replied that he was on the point of starting by wagon for California, but that being provided with a camping outfit, and feeling under no necessity of hurrying by the way, he was willing to give his whole attention, for several months at least, to collecting in my interest. It was accordingly arranged that the journey should take in as great a variety of country as possible, and, that the most productive points should be thoroughly worked. The energy, intelligence, and conscientiousness with which this plan was carried out are sufficiently attested by the material results upon which the present paper is based.
The route traversed was substantially as follows: Leaving Galeyville on March 3, Mr. Stephens drove southward to Cave Creek, where a few days’ collecting yielded a limited number of birds. At the end of this time he retraced his steps to Galeyville, and continuing northward, passed Camp Bowie, and crossed to the western side of the Chiricahua Mountains. Here a halt was made at Morse’s Mill, after a journey of seventy miles by wagon-road from Cave Creek, although the distance is less than twelve miles in an air line. This place is described in the notes as being at the head of a cañon, in a sort of basin, elevated about seven thousand feet above the sea, and encircled by mountains which rise from two to three thousand feet higher.
From some further remarks on the general character of the range, I quote the following: “The Chiricahua Mountains are situated in the southeast corner of Arizona, some of the foot-hills even reaching the line of New Mexico and the Mexican state of Sonora. Several small streams run east and west from their summits, those of the former division emptying into the San Simon Valley; of the latter into the Sulphur Spring and San Bernardino Valleys. The first two water-sheds are comprised in the Rio Gila system, while the San Bernardino Valley stretches southward, and water from it flows into the Pacific near Guaymas.”
“These valleys are usually grassy plains, but there are scattering bushes, mostly mesquite, in some of them. The scrub oaks begin with the foot-hills; they are evergreen, the leaves being insensibly replaced with new ones in May. A little higher the juniper (called ‘cedar’ by the people here) comes in. Still higher, on the north side of the hills, there is a little piñon and scrub pine, while the summits are heavily timbered with red and black pines. In the gulches some fir grows, and on the hillsides, mostly near the summits and facing the north, occasional patches of aspen.”
At Morse’s Mill three weeks were very profitably spent, and on April 1 a start was made for Tucson, the next objective point. The route led through Sulphur Spring Valley, Tombstone, and Cienega Station, and at all these places, as well as at some intermediate points, a longer or shorter stay was made for the purpose of collecting. These delays consumed so much time that Tucson was not reached until April 18.
The country lying about this town and the neighboring station, Camp Lowell, proved so rich in desirable birds that it engaged Mr. Stephens’ attention for nearly the whole of the two succeeding months, during which, however, a brief visit was paid to the Santa Rita Mountains, where some important observations were made.
The season practically ended with June, for the wagon-journey, begun on the 29th of that month, across the arid plains and scorching deserts of middle and western Arizona, was attended with such privations, and often positive suffering, that little attention could be paid to birds. Mr. Stephens arrived at Yuma on July 15, and by August 1 reached his final destination, Riverside, California.
The entire trip yielded about six hundred and fifty skins besides a fairly large number of nests and eggs. Under the terms of our agreement I had all the birds, a representative series of the nests and eggs, and the field notes relating to both. This collection, embracing the results of four months’ uninterrupted work in a region as yet only imperfectly known, seems to me too complete in itself to be merely skimmed of its cream. Accordingly in preparing the following paper I have included every species which is represented among the specimens or mentioned in the collector’s notes. It should be understood, however, that the latter were not kept with reference to this plan, and it is not unlikely that certain common birds, which are known to occur in Arizona, were inadvertently omitted. For similar reasons, the number of specimens obtained can seldom be taken as an exponent of the relative abundance of the species to which they belong, as a decided preference was given to the rarer kinds. Three species new to the “North American” fauna have already been announced (this Bulletin, Vol. VI, p. 252.).
A few technical points require explanation. The catalogue numbers are usually those of the collector’s field-book, but in certain cases—as of specimens taken as types, or with birds obtained by Mr. Stephens before starting on the present trip—I have used my own numbers, either alone or in connection with the original ones. This double system need cause no confusion, however, for the field-numbers never reach 700, while those of my general catalogue are always above 5,000. Of the measurements, the length and stretch were taken in the field, the others from the dry skins. The biographical matter is of course based on Mr. Stephens’ notes, which are sometimes paraphrased, sometimes literally quoted, as convenience dictates. The frequent quotations of Mr. Henshaw’s experience or opinions are always, unless otherwise stated, from his Report in Volume V of “Explorations and Surveys West of the One Hundredth Meridian.”
1. Turdus unalascæ Gmel. Dwarf Thrush.—The only Hermit Thrush in the present collection is unmistakably referable to var. unalascæ. In fact it gives nearly the same measurements as the smallest extreme in the large series examined by Mr. Henshaw.[[40]] Mr. Stephens marks it as the first which he has seen in Arizona where, however, it was found sparingly by Mr. Henshaw in October, 1873.