Page:Condor10(2).djvu/32

 86 THE CONDOR VoL. X I depth, 4.50, 3.25, 3. Outside diameter, 9, 7.80, 7.50.  depth, 2.20, 2.10, 2. Cavities [ diameter, 3.25,. 3.20, 3.50. 1telminthophila sordida. Dusky Warbler. Common from January until late September, in all the large canyons. Rare on the Island in October, but common on the mainland coast. Dendroica auduboni. Audubon Warbler. Common, October to February in- clus.ive. Antbus pendlvanicus. American Pipit. One specimen secured, October 18, on the high mesa. Mimus polyglottos leucopterus. Western Mockingbird. Fairly common. On the low cacti-covered mesas back of Smugglers' Cove, April 2, I found several unfinished nests in the cacti and holly bushes. The feathers of the foreheads and skins of several specimens were stained by the juice of the cactus apples. The Mockingbirds of the islands have been reported by some collectors as being some- what different from M.p. leucoplerus. This theory we have clearly disproved, the specimens taken being identical [vith mainland specimens, as far as discernible by us. Salpinctes obsoletus pulverius. San Nicholas Rock Wren. Fairly common in suitable localities over whole Island. Thirteen specimens preserved during October. In coloration of the back feathers, specimens range from rich brown to very pale grayish-brown, some of the browner ones comparing very closely with the coast main[and specimens. Thryomanes leucophrys. San Clemente Wren. Very common on all parts of the Island, especially so on the brush and cacti-covered hillsides of the northeast coast. Hylocichla ustulata. Russet-backed Thrush. Common in the larger canyons in October. Hyloichla guttats nana. Dwarf Hermit Thrush. Common over entire Island, October until April. Ixoreus neevius. Varied Thrush. Near Howland's in January and February several specimens were taken, Several secured in the canyons near Mosquito Har- bor, March and April, None seen during October. Long 1?each, California. SOME HINTS ON THE PREPARATION OF AN OOLOGICAL COLLECTION By ROBT. B. ROCKWELL HE time has not long passed when egg-collecting as a fad was very popular in this country, and as a result a great many collections were formed in dif- ferent parts of the country, many of them thru their vast size being veritable monuments to the rapacity of the "collecting mania." This unnecessary and in many instances wanton destruction called forth the just protests of a growing army