Geographic range.—Breeds in northeastern Siberia. Winters from the Malay Archipelago and Australia to the Southwest Pacific. In Micronesia: Mariana Islands—Guam, Pagan; Palau Islands—Angaur; Caroline Islands—Truk, Ponapé; Marshall Islands—Jaluit.
Specimens examined.—Total number, 4 (2 males, 2 females), as follows: Mariana Islands, USNM—Guam, 1 (Sept. 17); Palau Islands, USNM—Angaur, 3 (Sept. 21).
Remarks.—The Sharp-tailed Sandpiper is a regular visitor to western Micronesia and an uncommon visitor to eastern Micronesia. It was first recorded from the Palau Islands in 1868, where the bird was taken by Tetens, Heinsohn, and Kubary. In 1896 and 1898, records of this bird in the Mariana and Caroline islands were published by Oustalet and Hartert.
The NAMRU2 party obtained one specimen at Guam on September 17 and three at Angaur on September 21. At Angaur several birds of this species were seen at fresh water ponds in company with Erolia minuta ruficollis, Limicola falcinellus sibirica, Tringa glareola, and other shore birds.
Erolia ferruginea (Pontoppidan)
Curlew Sandpiper
Tringa ferrugineus Pontoppidan, Danske Atlas, 1, 1763, p. 624. (No type locality = Denmark.)
Calidris ferruginea Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 55 (Peleliu).
Geographic range.—Breeds in northern Asia. Winters from Africa east to Australia. In Micronesia: Palau Islands—Peleliu.
Specimens examined.—One female from Palau Islands, USNM—Peleliu (Sept. 6).