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University of California Publications in Geology (V0.7 
during the Pleistocene period and that the specimens obtained 
from the various horizons represent in the aggregate, with a 
considerable degree of accuracy, the avifauna of the Pacific 
coast at that time. 
RELATION OF PLEISTOCENE FAUNAS TO THOSE OF THE PRESENT 
Day 
A partial list of the Recent birds of the Transition zone in 
the Shasta region is given in the report of a biological survey 
of the region by C. H. Merriam.'® The list is appended here 
and the more striking differences displayed by the other loeali- 
ties are noted. This comparison may prove of interest in con- 
sidering the fossil avifauna. 
RECENT AVIFAUNA OF THE SHASTA REGION 
(Partial list from Upper Sonoran and Transition zones) 
Oreortyx picta (Douglas). 
Lophortyx californica (Shaw). 
Dendragapus obseurus (Say). 
Zenaidura macroura (Linnaeus). 
Cathartes aura (Linnaeus). 
Cireus hudsonius (Linnaeus). 
Buteo borealis (Gmelin). 
Aquila chrysaétos (Linnaeus). 
Faleo mexicanus Schlegel. 
Faleo sparverius Linnaeus. 
Bubo virginianus (Gmelin). 
Speotyto cunicularia (Molina). 
Glaucidium gnoma Wagler. 
Colaptes eafer (Gmelin). 
Apheloecoma californica (Vigors). 
Cyanocitta stelleri (Gmelin). 
Sturnella neglecta Audubon. 
Euphagus cyanocephalus (Wagler). 
Lanius ludovicianus Linnaeus. 
Planesticus migratorius (Lin- 
naeus). 
To this list may be added the following species which possibly 
oceur in the locality, though not recorded by the collectors of 
the survey party: 
Accipiter velox (Wilson). 
Aceipiter cooperi (Bonaparte). 
Astur atricapillus (Wilson). 
Buteo swainsoni Bonaparte. 
Archibuteo ferrugineus (Lichten- 
stein). 
Haliaétus Jeucocephalus (Lin- 
naeus). 
Gymnogyps californianus (Shaw). 
Faleo peregrinus Tunstall. 
Aluco pratineola (Bonaparte). 
Asio wilsonianus (Lesson). 
Otus asio (Linnaeus) . 
Geococeyx californianus (Lesson). 
Corvus corax Linnaeus. 
Corvus brachyrhynchos Brehm. 
Cosmopolitan water birds 
18 Merriam, C. H., Results of a Biological Survey of Mt. Shasta, Cali- 
fornia, N. Am. Fauna, No. 16, 1899. 
