July, 1916 
NEW RUFFED GROUSE FROM THE YUKON VALLEY 
167 
MEASUREMENTS IN MILLIMETERS OF ELEVEN SPECIMENS OF Bonasa umbel/us yukonensis 
No. 
Sex 
Locality 
Date 
Wing 
Tail 
Tarsus Culmen 
4509 
$ 
Forty-mile, Y. T. 
Oct. 18, 
1899 
185 
132 
45.5 
16.2 
4505 
8 
it a 
Nov. 5, 
66 
190 
136 
45.2 
16.2 
4508 
8 
n n 
Oct. 18, 
66 
188 
151 
44.0 
15.7 
4511 
8 
“ “ 
Nov. 15, 
66 
188 
156 
46.4 
17.2 
4512 
8 
S6 66 
Oct. 30, 
66 
192 
150 
47.1 
16.0 
4513 
8 
“ “ 
Oct. 12, 
66 
192 
154 
46.3 
— 
4515* 
8 
u a 
Nov. 5, 
66 
195 
155 
48.3 
17.1 
4514 
8 
Russian Mission, Alaska 
Oct. 11, 
1894 
188 
164 
46.6 
16.3 
4510 
8 
Fort Yukon, Alaska 
Sept. 24, 
1895 
178 
149 
42.0 
15.9 
4507 
8 
66 66 66 
66 66 
66 
182 
138 
41.9 
14.4 
4506 
8 (?) 
Yukon River (Alaska?) 
192 
156 
44.3 
16.7 
*Type 
Berkeley , California, June 18, 1916. 
MIGRATION AND FIELD NOTES FROM 
FRESNO COUNTY, CALIFORNIA 
By JOHN G. TYLER 
Podilymbus podiceps. Pied-billed Grebe. In Pacific Coast Avifauna No. 9, page 13, 
I recorded this grebe as possibly occurring in winter. It has since proven to be a fairly 
common winter visitant and also breeds regularly. Specimens of birds and eggs have 
been examined. I have found the Eared Grebe breeding but have not as yet detected 
it during the winter months. 
Sterna forsteri. Forster Tern. This species is a common summer visitant to 
suitable places in the valley, but I had not observed the date of arrival in the spring 
until the past season, when large numbers were migrating northward in small squads 
averaging 7 or 8 birds each, on April 16 and 17, 1914. This was in the vicinity of Sum- 
mit Lake. 
Querquedula cyanoptera. Cinnamon Teal. This friendly little duck bred in con- 
siderable numbers at a great many points in the vicinity of Fresno, young of various 
sizes being seen all through May and June, 1915. The broods usually numbered four 
or five and only occasionally more, the largest seen being of ten very small birds. This 
is the only variety of duck of my acquaintance in which the males attend the females 
and young- In many cases the drake is more solicitous than his mate and shows great 
distress when the young are disturbed. It is seldom that both parents are not seen 
caring for the young. 
Spatula clypeata. Shoveller. Several pairs of Shovellers nest each season around 
a willow-margined, but somewhat alkaline, pond near Riverdale. A female with 7 or 8 
small young was seen on May 23, 1915, showing that the species nested later than some 
of the other ducks, as on the same day large floppers of Dafila acuta were noted. 
Erismatura jamaicensis. Ruddy Duck. I have often thought there must be a rather 
large proportion of non-breeding birds among our summer groups of this species. Per- 
haps the Ruddy does not breed until it has attained the age of several years. At one 
pond, where about twenty of these little ducks remained all through the summer, I 
could not find a single nest, although the one patch of tules was searched repeatedly 
and persistently. At another small pond where three pairs were seen I was positive 
that only one nest was ever built. This contained four clean eggs on May 4, 1915, and 
the set had been completed by May 12 with the addition of two more eggs. Indeed, 
the nest was so small that it could not have accommodated more, and the weight of the 
six partly submerged the bottom of the nest which was built in the tules over water. 
All of the eggs were badly stained. 
