CHECK-LIST OF THE BIRDS OF OREGON Continued 



GULLS AND TERNS: Family Laridae. P a g c 



Glaucous Gull Larus hyperboreus 179 



Glaucous-winged Gull Larus glaucescens z8o 



Western Gull Larus occidentalis occidentalis 182. 



Herring Gull Larus argentatus smithsonianus 185 



Thayer's Gull Larus argentatus thayeri 2.87 



California Gull Larus californicus 188 



Ring-billed Gull Larus delawarensis 2.91 



Short-billed Gull Larus canus brachyrhynchus 2.94 



Bonaparte's Gull Larus Philadelphia 2.95 



Heermann's Gull Larus heermanni 2.97 



Pacific Kittiwake Rissa tridactyla pollicaris Z98 



Red-legged Kittiwake Rissa brevirostris 199 



Sabine's Gull Xema sabini 199 



Forster's Tern Sterna forsteri 300 



Common Tern Sterna hirundo hirundo 303 



Arctic Tern Sterna paradisaea 303 



Caspian Tern Hydroprogne caspia imperator 304 



Black Tern Chlidonias nigra surinamensis 307 



AUKS, MURRES, AND PUFFINS: Family Alcidae. 



California Murre Uria aalge calif ornica 309 



Pigeon Guillemot Cepphus columba 311 



Marbled Murrelet Brachyramphus marmoratus 314 



Ancient Murrelet Synthliboramphus antiquus 315 



Cassin's Auklet Ptychoramphus aleuticus 316 



Paroquet Auklet Cyclorrhynchus psittacula 317 



Rhinoceros Auklet Cerorhinca monocerata 317 



Horned Puffin Fratercula corniculata 318 



Tufted Puffin Lunda cirrhata 319 



Order COLUMBIFORMES: Pigeons and Doves 



PIGEONS AND DOVES: Family Columbidae. 



Band-tailed Pigeon Columba fasciata fasciata 32.5 



Rock Dove Columba livia livia 32,6 



Western Mourning Dove Zenaidura macroura marginella 32.7 



Order CUCULIFORMES : Cuckoos 



CUCKOOS: Family Cuculidae. 



California Cuckoo Coccyzus americanus occidentalis 32.9 



Order STRIGIFORMES: Owls 



BARN OWLS: Family Tytonidae. 



Barn Owl Tyto alba pratincola 331 



TYPICAL OWLS: Family Strigidae. 



MacFarlane's Screech Owl Otus asio macfarlanei 334 



Brewster's Screech Owl Otus asio brewstcri 335 



California Screech Owl Otus asio bendirei 335 



Flammulated Screech Owl Otus flammeolus 337 



Montana Horned Owl Bubo virginianus occidentalis 337 



Northwestern Horned Owl Bubo virginianus lagophonus 338 



F xxiii 1 



