522 Colorado College Publication 



The preceding description of the habits of this bird holds 

 good today. It is, as would be inferred from this, a lover of 

 cliffs and cafions, where it nests and raises its young in the 

 most inaccessible places. Besides the Garden of the Gods, it 

 is found about the Cheyenne Caiions, Bear Creek Cafion, and 

 Sclater records it from Glen Eyrie. Lloyd Shaw noted it in 

 Ute Pass and at the "Gateway Rocks" at Crystal Park, though 

 not breeding there. June 5, 1909, the present authors saw 

 tw or three near the Glen Cairn Ranch on Turkey Creek. 

 Several were seen about the reservoir in Monument Valley 

 Park, May 18, 1913. In May, 1908, Aiken observed a colony 

 about two miles east from Palmer Lake, on the crest of the 

 Divide, and saw some near St. Peter's Dome, in July, 1907. 



Archilochus aLxandri. Black-chinned Hummingbird. 



Rare. 



This species has previous to this only been recorded from 

 the southwestern part of the State; however, Aiken saw a 

 male hummingbird a short distance south of Colorado Springs 

 May 17, 1898, which he believes was the Black-chinned. Pie 

 also saw a female or immature hummingbird in Monument 

 Valley Park August 18, 1907, which from the oscillating tail 

 movement charactertistic* of this species he believes to have 

 been the same. In July, 1906, a visiting lady bird student in- 

 formed him that while sitting near the top of the Seven Falls 

 in South Cheyenne Canon a male hummer poised close before 

 her which she positively identified as the Black-chinned. 



*Aiken had exceptional opportunities of studying the characteristics 

 3f the four hummingbirds listed in the present paper while collecting 

 in the White Mountains of Arizona in the summer of 1876. where all of 

 them were plentiful. Following is an extract from his field notes: 

 "Rufus most abundant species in August, frequenting open woods where 

 extensive beds of scarlet pentstemon (Pentstemoii torreyi) grow. Moults 

 forepart of August without becoming ragged. Habit in common with 

 blatycsrcus of chasing others of species. . These demonstra- 



tions accompanied by chippering notes, very loud for such small birds. 

 Noise made by wings of rufus is a loud sharp hum approaching that 

 made by platycercus, which is a whizzing noise that may be heard at a 



