3i8 



Anthony, Avifautia of the Revillagigedo Islands. f Oct 



■with a rock or rank bunch of grass, on top of which the nest was built 

 of twigs and coarse grass. 



7. Fregata aquila. Man-o'-War Bird. — Abundant. 



8. Ardea herodias. Great Blue Heron. — One or two seen. 



"* 9. Heteractitis incanus. Wandering Tatler. — Not uncommon. 

 V 10. Charadrius dominicus, subsp. ? A Golden Plover was shot on a 

 coral reef on the south side of the island. The specimen is inaccessible 

 at the present writing and I am uncertain to which race it should be 

 assigned. 



Accompanying this species was a large Plover that escaped me, and 

 though seen on one or two subsequent occasions could not be secured. 

 \l 11. Arenaria interpres. Turnstone. — Three Turnstones were seen in 



company with the Plovers above mentioned May 21. 



12. Zenaidura clarionensis. Clarion Island Dove. — Very common. 

 On May 19, a fully fledged young bird was taken, and on the 23d, a fresh 

 egg was found in a hollow in the ground from which the parent fluttered 

 upon our approach. As Doves were often seen flying along the cliffs and 

 entering the holes in the lava it is very likely many were nesting in such 

 places. 



13. Speotyto rostrata. Clarion Burrowing Owl. — Abundant all over 

 the island. At the time of our visit they were usually seen in pairs about 

 the burrows which were often in colonies of a dozen, within a radius or 

 fifty yards. Many burrows were opened and found to extend to a distance 

 of from five to ten feet. They were very similar in all respects to the 

 burrows of our ground Owls in western United States. From the bur- 

 rows examined but a single set of 4 eggs was taken, the rest being empty. 

 The eggs were not to be distinguished from those of 5". c. hypogcea. 



14. Trochilidse. — A Hummingbird was reported by one of our party 

 but as it was not secured, nor others seen during our stay, the species is 

 unknown and it can only be regarded as a wanderer. 



15. Corvus corax sinuatus. American Raven. — Abundant. 



16. Chelidon erythrogaster. Barn Swallow. — A number of Barn 

 Swallows were seen on May 26, and one was shot; probably migrants. 



17. Troglodytes tanneri. Tanner's Wren. — Not uncommon. Seen 

 all over the island. Many young taken between May 19 and 27 were 

 scarcely to be distinguished from the adults. An old nest was found in 

 a thick thorny bush. It was composed of material such as might have 

 been selected by T. aedoit but the shape of the nest as well as its location 

 might have been the design of a Song Sparrow. 



