220 



BERGER 



of the birds that Johnson examined exhibited partial or 

 even complete breeding plumages although the birds were 

 biologically immature. "Fat content in summering birds 

 varies from around 3 to 6 percent of body weight, restrict- 

 ing them to relatively short flights." Johnson also wrote 

 that ". . .the sex ratio of plovers was strongly biased 

 toward males (about 5;1), and apparently balanced in the 

 other species" (whimbrels, bristlethighed curlews, wander- 

 ing tattlers, and ruddy tumstones). 



Johnson and Kienholz (1975) collected a female short- 

 eared owl (Asio /lammeusj on Fred islet on July 7, 1973. 

 Earlier, Amerson (1969) wrote that there were no records 

 for owls in either the Marshall or the Gilbert Islands. The 

 subspecies for the collected female was not determined; 

 hence, the general origin of this accidental visitor is un- 

 known^ 



Mailman (1979) discussed several sightings of birds for 

 which species identification was not possible; these birds 

 on the hypothetical list include a duck (Anas) and a tern 

 (presumably of the genus Sterna). 



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Ashmole, M. J , and N. P. Ashmole, 1967, Notes on Sea-Birds, 

 20, Notes on the Breeding Season and Food of the Red- 

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Ashmole, N. P., 1965, Adaptive Variation in the Breeding 

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, 1968, Body Size, Prey Size, and Ecological Segregation in 



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, 1981, Hawaiian Birdlife, 2nd Ed., University Press of Hawaii, 



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