CONTENTS 
xiii 
Page 
Cuckoos, Road-runners, etc.: Order Cuculiformes. 307 
Cuckoos and Road-runners: Family Cuculidae. 307 
Cuckoos: Subfamily Cuculinae. 308 
California Cuckoo: Coccyzus americanus occidentalis. 308 
Road-runners: Subfamily Neomorphinae. 309 
Road-runner: Geococcyx californianus. 309 
Owls: Order Strigiformes. 314 
Barn Owls: Family Tytonidae. 314 
American Barn Owl: Tyto alba pratincola. 315 
Horned Owls, etc,: Family Strigidae. 316 
Mexican Screech Owl: Otus asio cineraceus. 316 
Aiken Screech Owl: Otus asio aikeni. 318 
Flammulated Screech Owl: Otus flammeolus flammeolus. 318 
Pallid Horned Owl: Bubo virginianus pallescens. 320 
Western Horned Owl: Bubo virginianus occidentalis. 324 
Rocky Mountain Pygmy Owl: Glaucidium gnoma pinicola. 324 
Elf Owl: Mjcropallus whitneyi whitneyi. . . 326 
Burrowing Owl: Speotyto cunicularia hypogaea. 327 
Arizona Spotted Owl: Strix occidentalis lucida. 330 
American Long-eared Owl: Asio wilsonianus. 332 
Short-eared Owl: Asio flammeus. 334 
Saw-whet Owl: Cryptoglaux acadica acadica. 337 
Goatsuckers, etc.: Order Caprimulgiformes. 339 
Whip-poor-wills, Nighthawks, Poor-wills, etc.: Family Caprimulgidae. 339 
Whip-poor-wills and Poor-wills: Subfamily Caprimulginae. 339 
Stephens Whip-poor-will: Antrostomus vocifcrus arizonae. 339 
Poor-will: Phalaenoptilus nuttalli nuttalli.,. 340 
Nighthawks: Subfamily Chordeilinae. 342 
Western Nighthawk: Chordeiles minor henryi. 342 
Pacific Nighthawk: Chordeiles minor hesperis. 345 
Howell Nighthawk: Chordeiles minor howelli. 346 
Texas Nighthawk: Chordeiles acutipennis texensis. 346 
Swifts and Hummingbirds: Order Micropodiiformes. 348 
Swifts: Family Micropodidae. ...... . 348 
Spine-tailed Swifts: Subfamily Chaeturinae. 348 
Northern Black Swift: Nephoecetes niger borealis. 348 
Chimney Swift: Chaetura pelagica. 350 
Typical Swifts: Subfamily Micropodinae. 351 
White-throated Swift: Aeronautes saxatalis. 351 
Hummingbirds: Family Trochilidae. 353 
Subfamily Trochilinae. 353 
Black-chinned Hummingbird: Archilochus alexandri. 354 
Costa Hummingbird: Calypte costae. 355 
Broad-tailed Hummingbird: Selasphorus platycercus. 357 
Rufous PIummingbird: Selasphorus rufus. 362 
Calliope Hummingbird: Stellula calliope. 366 
Rivoli Hummingbird: Eugenes fulgens. 368 
Broad-billed Hummingbird: Cynanthus latirostris. 369 
Arizona Blue-throated Hummingbird: Lampornis clemenciae 
bessophilus.... *.*.. .. 370 
Trogons: Order Trogoniformes. 372 
Trogons: Family Trogonidae. 372 
[Coppery-tailed Trogon: Trogonurus ambiguus]. 372 
Kingfishers, etc.: Order Coraciiformes. 373 
Kingfishers: Family Alcedinidae. 373 
