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Although ornithological observations have not been the main object of any pliase of our work on the Northern Marshall Islands, numerous notes on birds have accumulated which are here placed on record, The birds were identified by use of Ernst Mayr's "Birds of the Southwest Pacific!' and the names used here are mostly those accepted by Mayr in that work. UnIortunately it was impractical to document these records with specin?ens. The sight observations presented should therefore be acceprcd with some reservations.

Field work conducted by the senior author at Bikini Atoll, Marshall Islands, in May 1986 yielded twenty-three species of birds; six of these were documented as nesting and an additional four species almost certainly nest as well. Six species were previously unrecorded for Bikini Atoll, and one of these, the Laughing Gull (Larus atricilla) was new to Micronesia. The recorded avifauna for Bikini Atoll now stands at twenty-six species. Major seabird colonies were located on Aomoen (and other northern islets), Nam, and Oroken/Jalete/Lukoj (and other southeastern islets). Scaevola and Tournefortia scrub and Pisonia grandis forests are the most frequently used habitats for nesting seabirds. Numerically, the most abundant breeding birds were the terns Anous minutus, A. stolidus and Gygis alba and the boobies Sula leucogaster and s. sula. Environmental rehabilitation options which minimize habitat alteration on the important nesting islets are recommended. Close monitoring and protection of seabird populations after Marshallese resettlement will guard against excessive disturbance and exploitation.

Kwajalein is a crescent-shaped atoll that lies between 09°25' and 08°40'N and between 166°50' and 167°45'E, near the center o£ the western (Ralik) chain of the Marshall Islands (Figure 1). Composed of more than 90 islets, largely uninhabited, Kwajalein Atoll extends about 75 miles from southeast to northwest. It has a land area of about 6 square miles (3,854 acres) (Global Associates 1987), an increase of about 263 acres over the original area that was brought about by filling of land on Kwajalein, Roi-Namur, and Meek Islands.