July, 1909 
NOTES ON THE BIRDS OF LOS CORONADOS ISLANDS 
137 
natural bridge. The eggs averaged smaller than the ones taken in April, and all 
eggs were incubated. 
Phalacrocorax pelagicus resplendens. Baird Cormorant. Two pairs were nest- 
ing on North Island on April 8 , but their nests were inaccessible. One dead adult 
was found in the surf May 31 . 
Pelecanus californicus. California Brown Pelican. About five hundred pairs 
nested on North Island April 8. The colony extended from the south end to with- 
in one-half mile of the north end. The majority of the nests contained sets of three, 
very few two, but none with more than three. On the first of June we made a care- 
ful survey of the colony and found only four sets of eggs, altho many nests of the 
first setting contained large young. 
Totanus melanoleucus. Greater Yellow-legs. One shot on South Island April 
11 by Beck. 
Heteractitis incanus. Wandering Tattler. One taken April 8 and one April 9, 
both females; not common. 
Actitis macularia. Spotted Sandpiper. Very rare; one male taken on Nortli 
Island June 1st. 
Arenaria melanocephala. Black Turnstone. Common; several taken. 
Haematopus bachmani. Black Oystercatcher. Fairly common on all the is- 
lands. Seen only at low tide. Three skins taken, one April 6 and two June 4, 
showing signs of breeding. 
Lophortyx sp.? Quail. Fairly common on South Island. A few specimens 
secured, but status of the species undetermined. 
Falco peregrinus anatum. Duck Hawk. Three pairs were nesting on South 
Island, and two pairs on North Island. All nests were inaccessible. Three speci- 
mens were secured. 
Falco sparverius phaloena. Desert Sparrow Hawk. One bird, probably of this 
species, was seen hovering over North Island April 8. 
Asio accipitrinus. Short-eared Owl. One flusht from a bush on North Island 
April 8. 
Ceryle alcyon. Belted Kingfisher. One seen fishing near camp on South Is- 
land April 10. 
Aeronautes melanoleucus. White-throated Swift. A few seen flying over-head 
on South Island April 5, and over North Island June 2. One secured by Beck. 
Calypte anna. Anna Hummingbird. Not common; only seen on the largest 
island. 
Sayornis saya. Say Phoebe. Seen on North Island April 8. 
Empidonax difficilis. Western Flycatcher. Fairly common on the hillside of 
North Island. 
Empidonax traillii. Traill Flycatcher. One taken June 4 on North Island. 
Corvus corax sinuatus. American Raven. Saw about six individuals during 
week of April 4 to April 11 on South Island. 
Carpodacus dementis. San Clemente House Finch. These birds were abundant 
on all the islands. The males were of bright fine plumage, the coloration on the 
breast and head varying from a bright red to a yellowish orange. 
Zonotrichia leucophrys gambeli. Gambel Sparrow. One taken on South Is- 
land April 4 and several seen on North Island April 8. 
Melospiza coronatorum. Coronado Song Sparrow. Fairly common on all the 
islands. Three young just able to fly were seen on Middle Island April S. 
Spizella passerina arizonae. Western Chipping Sparrow. Noted April 8 on 
North Island; rare. 
