no. 3640 HAWAIIAN BIRDS — CLAPP AND WOODWARD 15 



It has been recorded as a vagrant in the Aleutian and Pribilof Islands 

 (AOU, 1957). 



Marsh Hawk Circus cyaneus hudsonius 



(Hen Harrier) 



On Oct. 30, 1964, Wirtz was told by military personnel on Midway 

 Atoll that two hawks with rusty underparts, white rumps, and 

 unbarred tails, had been seen recently on the atoll. The following day, 

 he collected an immature female marsh hawk (USNM 494360) as it 

 quartered low over Scaevola on Eastern Island, Midway Atoll. This 

 subspecies is found from Alaska south to northern Baja California 

 and in other parts of North America (AOU, 1957). 



Henshaw (1902) reported that several specimens had been taken in 

 Oahu but gave no further details. The present specimen apparently is 

 the first seen or collected in the Hawaiian area since the late 19th 

 century. 



Peregrine Falcon Falco peregrinus (pealei?) 



Standen collected a female peregrine falcon (USNM 494363) Mar. 7, 

 1965, as it flew over the beach and over Scaevola bushes at the western 

 end of Green Island, Kure Atoll. The specimen, which was badly 

 worn, had very dark underparts and a wing measurement of 377 mm. 

 Dr. Clayton M. White (in litt.) informed us that he identified the 

 specimen as F. p. pealei on the basis of the extremely heavily marked 

 flanks and thighs but that "in every other regard the specimen is a 

 match for darker examples of F. p.japonensis." Falco p.japonensis is 

 a migratory race that breeds from northeastern Siberia to Kamchatka, 

 the Kuriles, and northern Japan (Vaurie, 1965) while F. p. pealei is 

 believed to be a more sedentary form that breeds in the Commander 

 and Aleutian Islands and on islands off the coast of southern Alaska 

 (Vaurie, 1965). 



Another falcon, identified as a peregrine by POBSP personnel, was 

 seen offshore of Lisianski Island Mar. 12, 1965, and over the island 

 on March 13 and 14. On the 13th, a roost that the falcon evidently 

 had been using was found in a Casuarina tree. The remains of many 

 birds, at least three gray-backed terns (Sterna lunata), one black noddy 

 (Anous tenuirostris) , 47 ruddy turnstones (Arenaria interpres), and 20 

 golden plovers (Pluvialis dominica), found beneath the roost indicated 

 that the falcon probably had been present on the island for at least 

 a week or more before the arrival of the POBSP field party. 



On Mar. 24, 1967, Hackman saw still another peregrine falcon, an 

 adult, flying over the thickly inhabited section of Sand Island, Midway 

 Atoll, accompanied by a large flock of white terns (Gygis alba). The 



