68 THE CONDOR Vol. XXI 
The snake. was distended from eating, presumably, the eggs or young, but made its es- 
cape before I could make certain. 
Agelaius phoeniceus neutralis. San Diego Red-wing. A large colony nested in a 
wheat field. Their nests probably all were destroyed, as the grain was ready to reap 
and the nests contained one or two eggs each. 
Euphagus cyanocephalus. Brewer Blackbird. Seven nests were destroyed by : 
people near a house: the birds annoyed a sick person. 
Carpodacus mexicanus frontalis. House Finch. Numbers of these nests are torn 
down around dwellings, and on the deserts small mammals cause a heavy loss. 
Astragalinus tristis salicamans. Willow Goldfinch. Two nests of this species 
were found which had been taken possession of by white-footed mice. The eggs were 
still in the bottom of the nest. This happens commonly. : 
Astragalinus psaltria hesperophilus. Green-backed Goldfinch. Newly hatched 
young were found dead under a nest after a wind storm. 
Junco oreganus thurberi. Sierra Junco. Sterility seems tc be common in this spe- 
cies, particularly in certain sections where the nests are placed in wet moss and fern 
banks, though perhaps loss is due to chilling. 
Melospiza melodia cooperi. San Diego Song Sparrow. A number of nests found 
had been taken possession of by white-footed mice. 
Pipilo maculatus megalonyx. San Diego Towhee. Four eggs disappeared over 
night. The nest was torn out, probably by an animal of some kind. 
Pipilo crissalis senicula. Anthony Towhee. Fourteen nests were destroyed. Of 
these, one was destroyed by a gopher snake, two by jays, two by man, and the rest by 
unknown causes. This species suffers heavily during the nesting season. One reason 
for this is that the actions and calls of the birds attract attention to their nests. 
Passerina amoena. Lazuli Bunting. This is another species whose home the 
white-footed mouse frequently preémpts. The eggs may usually be found buried in the 
bcttcm cf the nest. ; 
Petrochelidon lunifrons lunifrons. Cliff Swallow. Practically as many nests as 
there were pairs of birds were destroyed in Claremont, as the birds persisted in nesting 
on the college buildings, where they were a decided nuisance. Repeated destruction of 
their nests, and dousing the birds by means of fire hose, did not discourage them. I 
suggested letting them complete their sets before destroying the nests. This was done, 
whereupon they removed to other buildings where they were unmolested. 
Vireo solitarius cassini. Cassin Vireo. Four nests were destroyed by .rain and 
windstorm. Mr. Pierce reports others destroyed by the same cause. 
Dendroica nigrescens. Black-throated Gray Warbler. One nest was torn out, 
cause unknown. 
Wilsonia pusilla chryseola. Golden Pileolated Warbler. Two nests, in which sets 
were never completed, were found in a marsh. 
Mimus polyglottos leucopterus. Western Mockingbird. Three nests were de- 
stroyed by jays. 
Toxostoma redivivum pasadenense. California Thrasher. The sets disappeared 
from seven nests. One pair nested near a house, one egg was laid, and hatched. When 
the young bird was full grown, another egg was laid in the same nest, and also hatched. 
Later a new nest was built in another tree, and again one egg was laid. This fell prey 
to a jay. . 
Thryomanes bewicki charienturus. San Diego Wren. Two nests were destroyed, A 
one by man and one by a snake or small mammal, as it was inaccessible to anything 
else, being under a large pile of cactus. 
Chamaea fasciata henshawi. Pallid Wren-tit. Three nests were destroyed; cause 
unknown. : 
Psaltriparus minimus minimus. Coast Bush-tit. Hleven nests were blown to 
pieces by a windstorm; more were reported to me by others. 
_ Hylocichla ustulata ustulata. Russet-backed Thrush. One nest was destroyed. 
Claremont, California, January 22, 1919. 
