320 BULLETIN 17 6, UNITED STATES NATIONAL MUSEUM 



barely crossing our southern border into the mountains of southern 

 Arizona and New Mexico. It was added to our fauna by Henry W. 

 Henshaw (1875), who took the first specimen at Camp Grant, Ariz., 

 in 1873. Since then, as he expected, it has been found to be a fairly 

 common summer resident in various other mountain canyons. 



We found it in the Huachuca Mountains, Ariz., in several of the 

 canyons, where its favorite haunts seemed to be among the maples 

 along the mountain streams, and where it ranges from 5,000 feet up to 

 7,500 feet on the slopes just below the main pine belt, where there 

 were scattering yellow pines. Otho C. Poling (1890) says of its 

 haunts in this same region : 



It arrives in May, but is nowhere plentiful until the mescal shrubs begin to 

 blossom, about the middle of June. From this time on during the entire summer 

 one may observe on almost any hillside below the pine belt large clusters of 

 bright red or yellow flowers spreading out from stalks ten or fifteen feet high. 

 There are many varieties of this plant and all are favorite feeding resorts of 

 the Rivoli Hummer. I have shot as many as a dozen in a day simply by sit- 

 ting down and watching for them to come and feed. It is necessary to select a 

 well-matured plant, and at the proper elevation, as well as in good surroundings 

 of spruce pines. "While feeding, these birds range from 4,500 to 8,000 feet alti- 

 tude or up to the pine belt, their favorite grounds being where the pines end 

 on the downward slope. 



Bendire (1895) quotes from some notes given him by Dr. A. K. 

 Fisher, as follows: 



The Rivoli Hummer was not met with by us in the Chiricahua Mountains 

 until we made camp in the upper part of Ruckers Canyon, among the yellow 

 pines (Piniis ponderosa) . On the morning of June 5, 1894, an adult male dashed 

 through the camp, paused a moment over a flower spike of a scarlet Pentstemon, 

 and then disappeared up the canyon as rapidly as it had come. No more were 

 seen until we reached the high mountains at Fly Park. * * * They were 

 usually found in the more open parts of the forest where fire had killed a por- 

 tion of the evergreens, and a deciduous undergrowth of aspens and shrubs 

 thrived about the cool springs and little rivulets. A boreal honeysuckle {Loni- 

 cera involucrata) was abundant and just coming into bloom. All the Hummers 

 in the vicinity, the Rivoli Hummer among them, delighted to glean from the 

 flowers and to sit half concealed among the large leaves of this shrub." 



Dickey and van Rossem (1938) say of its haunts in El Salvador: 

 "E-ivoli's hummingbird was found only among the oaks and pines 

 and among the scrubby, flowering growths between 7,000 and 8,000 feet 

 on the south slope of Los Esesmiles, and about some flowering agave 

 plants scattered over rocky portions of the summit of Volcan de 

 Santa Ana at 7,200 feet." 



Nesting. — Mr. Henshaw (1875) seems to have reported the first nest 

 discovered, of which he says : 



A very beautiful nest was discovered, which, save in its large size, resembles 

 in its construction the best efforts of the little Eastern Rubythroat. It is com- 

 posed of mosses nicely woven into an almost circular cup, the interior possessing 



