no. 3640 HAWAIIAN BIRDS — CLAPP AND WOODWARD 27 



Glaucous- winged Gull Larus glaucescens 



Twelve specimens of glaucous-winged gulls have been collected in the 

 Hawaiian Leeward Islands by POBSP personnel. These are listed by- 

 each island as follows: 



Kure Atoll, Green Island: USNM 493344, Mar. 10, 1963; USNM 

 494365, Dec. 24, 1964; USNM 494368, Feb. 1, 1965; USNM 494369, 

 Mar. 1, 1965; USNM 494370, Mar. 7, 1965; USNM 494372, Mar. 9, 

 1965; USNM 497295, 497223, Dec. 31, 1966. 



Pearl and Hermes Reef, Southeast Island: USNM 493345, 

 Feb. 26, 1963. Humphrey Island: USNM 494131, 494132, Mar. 18, 

 1965. 



Lisianski Island: USNM 494133, Mar. 12, 1965. 



These specimens were all immature birds. Two (494132, 497223) 

 were in first winter plumage; eight (493344, 493345, 494131, 494133, 

 494368-494370, 497295) were in first nuptial plumage; one (494372) 

 was molting into second winter plumage; and one (494365) was in 

 second winter plumage (D wight, 1901). 



Three other hitherto unreported glaucous-winged gulls were col- 

 lected as beach-dried remains in 1923 by Wetmore. One, an adult 

 (USNM 489330), was collected on Seal Island, Pearl and Hermes Eeef, 

 Apr. 27, 1923. Two others, immature specimens in too poor condition 

 for accurate age assessment, were obtained on Kure Atoll (USNM 

 489328, Apr. 18, 1923) and Necker Island (USNM 489329, June 18, 

 1923). 



Specimens have been reported from Hawaii and Laysan (Henshaw, 

 1900, 1902). An adult was seen at French Frigate Shoals on Mar. 19- 

 20, 1954 (Richardson, 1954), and two were seen at Kure Atoll Feb. 3-7, 

 1963 (Robbins, 1966). A single glaucous-winged gull was found dead 

 at Midway Atoll Mar. 7, 1957 (Kenyon and Rice, 1957). No glaucous- 

 winged gulls have been reported previously from Pearl and Hermes 

 Reef, Lisianski, or Necker. 



This species breeds from the Komandorskie, Pribilof, and Aleutian 

 Islands through Alaska to northwestern Washington and winters 

 south to northwestern Mexico and Japan (AOU, 1957). 



Glaucous Gull Larus hyperboreus 



During January 1965, POBSP personnel saw two gulls, both 

 presumably this species, on Green Island, Kure Atoll. One, a male in 

 first winter plumage (USNM 494366), collected on January 17, was 

 identified as a glaucous gull. An earlier (and not previously reported) 

 record from Kure Atoll is a beach-dried mummy (USNM 489331) 



