Accipiter virgatus gularis (Temminck and Schlegel)
Asiatic Sparrow Hawk
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.