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190 THE CONDOR Vol. XIV ten or even fifty years ago, as most of this stretch of coast is not only unin- habited but almost entirely unvisited. Aluco pratincola. Barn Owl. April 16 I found a nest in a deep cleft of the rocks, twenty feet above the sea, which contained a single nestling two-thirds grown. This site was newly occupied, but on a ledge four feet above the floor of a cave on the .higher, ground was a nest that must have been used for genera- tions. Beneath it was a pile of refuse and pellets two or three feet high. Colapies caret collaris. Red-shafted Flicker. One of these birds was making himself very much at home on the hillsides. As there was no tree or bush higher than four feet upon this island, he seemed rather out of place. Either this bird or another one must have been here the year before, as there was weather-worn feather. in an Osprey's nest that showed no signs of having been repaired recently. Phalaenoptilus nuttalli californicus. Dusky Poorwill. A single bird' was flushed twice during the bright part of the day. Not seen or heard at dusk. A?ronautes melanoleucus. Whitethroated Swift. Along the backbone of the island were a number darting to and fro. Calypte anna. Anna Hummingbird. Several seen. Selasphorus rufus. Rufous Hummingbird. A single Selasphorus per- mitted a close enough view for me to be fairly sure that it was this form. Tyrannus verticalis. Arkansas Kingbird. Two pairs had staked off their claims and were standing guard to keep off intruders. They showed every indi- cation of intending to remain and raise a family in some scrubby brush later on. Sayornis nigricans. Black Phoebe. A pair was seen daily about a rocky strip near the Shore. Myiochanes richardsoni. Western Wood 'Pewee. One of these birds, looking very much out of place, was seen on the eighteenth. Corvus corax sinuatus. Raven. Several of these kept vigilant watch over camp. Occasionally they could be seen surreptitiously sneaking into certain holes along the cliff. Carpodacus mexicanus clementis. San Clemente House Finch. This species presented a rather interesting problem. On the northern end of the south island nesting was far advanced. Only a couple of nests were found con- taining eggs, these almost on the point of hatching, while perha13s a dozen were found with young in all stages, the oldest of which flew out of the nest when I became too familiar. On the southern end, fresh eggs and incomplete sets were the rule, no young at all being noted. The difference was most pronounced and exactly contrary to what one would be le.d to expect, for at the northern end. the slope was northwest, facing the cold winds and getting the full sweep of the sea fogs, while the other end was sheltered and comparatively warm, facing toward the southeast. The majority of nests were in cholla cactuses, but a few pairs had set up housekeeping in suitable crannies among the rocks. Passerculus ros$ratus. Large-billed Sparrow. One or two individuals seen. Evidently the rear guard of the general migration. Zonotrichia leucophrys gambeli. Gambel Sparrow. Several birds present. Melospiza melodia subsp. Song Sparrow. The only specimen secured was destroyed by the rats. Song sparrows seem never to have been noted on affy of the islands south of Los Coronados. If this bird was a resident, as I be- lieve was the case, it was probably clementae, but it may have been a visitor from the mainland.