Sharp-shinned Hawk Accipiter striatus Vieillot       Field Guide IDs: NG-110; G-70; P-l52; PW-pl 16; AE-pl 294; AW-pl 325; AM(I)-226 Nest Location Nest Type Eggs & Mating System Dev. & Parental Care Primary & 2ndary Diet.. Foraging Strategy F I: 32-35 DAYS SEMIALTRICIAL 1 DECID 10 feet - 60 feet (10 feet - 90 feet) ? 4-5 (3-8) MONOG F: 24-27 DAYS MF BREEDING: n woodland, mountainous conif/decid forest. 1? brood. DISPLAYS: Courting pair circle, land in tree, and call; courtship often near nest. NEST: By trunk; broad and flat, of sticks, twigs. Lined with finer twigs, outer bark strips, grass, conif needles. Occ use old crow/squirrel nests, adding fresh materials. EGGS: White/bluish-white, marked with browns, wreathed. Occ unmarked; some clutches mixed. 1.5" (38 mm). DIET: Among accipiters, takes greatest proportion of birds as prey; only rarely takes small mammals, frogs, lizards, insects. CONSERVATION: Winters s through C.A. to c Panama, Greater Antilles. Blue List 1972-86; dramatic decline in e U.S. in early 1970s: 8% - 13% of eggs showed shell thinning. NOTES: Juveniles may comprise up to 60% of breeding females in some populations. Male does virtually all of hunting from incubation to early nestling stage. Young dependent on adults for 21-28 days postfledging. Often migrates in large numbers. STANFORD. NOTES: Fairly common visitor throughout campus from fall through spring, preying on small birds in virtually any habitat type. Unlike its larger congener the Cooper's Hawk, this species does not breed on campus. ....Similar Species: Cooper's Hawk ESSAYS: Wing Shapes and Flight; Blue List; Eye Color; Adaptations for Flight; Raptor Hunting; DDT REFERENCES: Henny et al., 1985; Kerlinger and Lehrer, 1982; Platt, 1976; Reynolds and Meslow, 1984.