132 University of California Publications in Zoology. |Vou.5 
Planesticus migratorius propinquus (Ridgway). Western Robin. 
The western robin, early in the summer, was nowhere abund- 
ant. A very few pairs were seen along the upper Santa Ana, 
near the confluence of South Fork, where a nest was located June 
12, 1906, containing three eggs in which incubation was nearly 
complete. The nest was of the usual mud-and-straw composition, 
and was situated six feet above the ground in a young incense 
cedar. The eggs are of the regulation ‘‘robin’s ege’’ blue, but 
are large for the species. They measure 1.16 x .84, 1.14  .87, 
and slab» eco: 
A pair of robins were noted at Seven Oaks, and several were 
seen on Big Meadows in June and July; also at the South Fork 
cienaga, 8500 feet altitude. At Dry lake, 9000 feet, a few were 
always to be seen; a full-grown juvenal was taken there June 18, 
1907. Several were seen around Bear lake the last of July, 1905, 
and a nearly fledged juvenal was taken there July 31. Young 
were seen at Bluff lake in July; and in the same vicinity, August 
28 to September 3, considerable numbers of young-of-the-year in 
small flocks were noted. These were in almost complete first 
winter plumage. Adults taken at the same time were in the 
midst of the fall moult. It was interesting to note that the moult- 
ing adults were off by themselves solitarily in the dense willow 
thickets and not mingling with the flocks of full-plumaged young 
birds. 
Fifteen specimens of the western robin were taken, and seem 
to be in no way different from examples from elsewhere in the 
west. 
Sialia mexicana occidentalis (Townsend). Western Bluebird. 
The western bluebird was an abundant and conspicuous bird 
throughout the Transition zone; and in places it ranged some- 
what above and below. It was noted not uncommonly in the 
tamarack pines of the Boreal zone, around Dry lake, 9000 feet, 
where several pairs were nesting, and on San Bernardino peak, 
10,600 feet. A pair had a nest June 9, 1906, in a syeamore stub, 
near the mouth of Mountain Home creek, which is rather within 
the Upper Sonoran zone. Along the upper Santa Ana, from 
Seven Oaks to Big Meadows, no bird was commoner. <A nest 
