8 An Annotated List of the Birds of Utah. 



* 104. Empidonax flaviventris Bd.,\ar. di 'fficilis Baird. Western yellow- 

 bellied Flycatcher. Rare in pine woods of the mountains in July. 

 (Ridgway.) 



* 105. Empidonax obscums (Swains.) Wright's Flycatcher. Common. 

 Chiefly confined to the mountains. 



* 106. Empidonax Hammondii Baird. Hammond's Flycatcher. Less 

 common than the preceding. Occurring in the fall. 



* 107. Empidonax Trailii (Aud.), var. pusillus Swains. Little Fly- 

 catcher. Especially abundant in the valleys, frequenting the willow 

 thickets along the streams. " Breeds on the mountains up to 7,000 feet." 

 (Ridgway.). 



ALCIDINID2E. The Kingfishers. 



* 108. Ceryle alcyon (L.). Kingfisher. Common on all the streams. 

 Found by Mr. Ridgway in the mountains up to 7,000 feet. 



CAPRIMULGIDiE. The Goatsuckers. 



* 109. Chordeiles popetue (Vicill.), var. Henryi Cass. Western Night 

 Hawk. Very abundant in the valleys, and breeding in mountains up to 

 7,000 feet. 



* 110. Antrostomus Nuttalli (Aud.). Nuttall's Whippoorwill. Same 

 range as preceding, though much less numerous. 



CYPSELID2E. The Swifts. 



* 111. Panyptila saxatilis (Woodh.). White-throated Swift. Not un- 

 common. Builds its nest in holes in limestone cliffs. 



TROCHILIDJE. The Humming Birds.* 



* 112. Trochilus Alexandri Bourc. and Muls. Alexander's Humming 

 Bird. Numerous in the valleys. "Breeds up to 8,000 feet." (Ridgway.) 



* 1 13. Selasphorus platycercus (Swains.). Broad-tailed Humming Bird. 

 Common at Ogden in September. (Allen.) Exceedingly abundant in 

 Wahsatch mountains, from May to August. (Ridgway.) 



CUCULID.E. The Cuckoos. 



114. Coccyzus Americanus (L.). Yellow-billed Cuckoo. Heard in 

 July at Provo. As the species breeds abundantly in Arizona (Tucson, 

 Bendire), as well as in Nevada and Sacramento Valley (Ridgway), it 

 doubtless nests in portions of Utah also. The season at which it was 

 noted renders this supposition most probable. 



* Stelluhi calliope Gould. The Star-throated Hummer doubtless occurs in the moun- 

 tains of Utah, since it was observed plentifully by Mr. Ridgway in the East Hum- 

 boldt mountains, in the eastern portion of Nevada, in August and September. 



