1909] The 1907 Alexander Alaska Expedition. 181 
THE BIRDS. 
By JOSEPH GRINNELL. 
In compiling the following report upon the birds of the 1907 
Alexander Alaska Expedition, I have depended entirely for other 
than technical information upon the field notebooks of the mem- 
bers of the party. A preliminary step to compiling the report 
in its final form was the copying of every reference to each bird 
from all the field books. These references were then assorted 
by species, and the information thus obtained was combined, 
always with a strict regard for accuracy. 
The 532 bird skins were catalogued as identified, and Univer- 
sity of California Museum of Vertebrate Zoology Bird Depart- 
ment numbers were given them. These are the numbers used in 
referring to each specimen in the following technical accounts of 
the species. 
Unless otherwise stated, measurements are given in milli- 
meters. In color-deseriptions I have adhered as closely as pos- 
sible to Ridgway’s ‘‘ Nomenclature of Colors.’’ 
The following new birds are deseribed: Lagopus alexandrae, 
Lagopus dixoni, Buteo borealis alascensis, Picoides americanus 
fumipectus, Loxia curvirostra sitkensis, Planesticus migratorius 
caurinus. The types of these are in the Museum collection. 
Ninety-nine species are recorded in this report, and of these, 
eighty-one species are represented in the collection by one or 
more specimens. 
Colymbus holboellii (Reinhardt). Holboell Grebe. 
A flock of seven grebes seen at Windfall Harbor, Admiralty 
Island, on the evening of May 7, were thought by both Littlejohn 
and Dixon to be of this species. On several subsequent ocea- 
sions the same species was noted, but always out of shotgun range 
and too wary to approach. These were probably all migrants on 
their way farther north. On Glacier Bay, July 16, three more 
were noted by Littlejohn flying inland to the eastward, perhaps 
toward some lake in the forest. 
