_Astur (Nisus) gularis_ Temminck and Schlegel, in Siebold, Fauna
Japon., Aves, 1845, p. 5, pl. 2. (Type locality, Japan.)
_Accipiter nisoides_ Oustalet, Nouv. Arch. Mus. Hist. Nat. Paris,
(3), 7, 1895, p. 166 (Guam); Hartert, Novit. Zool., 5, 1898, p. 51
(Marianne); Seale, Occ. Papers Bernice P. Bishop Mus., 1, 1901, p.
44 (Guam); Safford, Osprey, 1902, p. 70 (Marianas).
_Accipiter gularis_ Kuroda, in Momiyama, Birds Micronesia, 1922,
p. 39 (Guam).
_Accipiter virgatus gularis_ Hand-list Japanese Birds, rev., 1932,
p. 182 (Guam); Hand-list Japanese Birds, 3d ed., 1942, p. 203
(Guam); Mayr, Birds Southwest Pacific, 1945, p. 302 (Micronesia).
_Accipiter virgatus nisoides_ Bryan, Guam. Rec., vol. 13, no. 2,
1936, p. 15 (Guam).
_Geographic range._--Breeds in Japan and northern China. Winters
south to Philippines and Malaysia. In Micronesia: Mariana
Islands--Guam.
_Remarks._--Oustalet (1895:166) records a male bird shot by Marche at
Guam in October, 1887. Seale (1901:44) records a specimen taken at Guam
by Owston's Japanese collectors. These are the only records found for
Micronesia, and the hawk may be classed as a casual winter visitor.
Strophlet (1946:535) observed "a small light-throated" falcon at Guam on
November 7, 1945, which may have been of this species.
=Pandion haliaetus melvillensis= Mathews