The diet of the Zone-tailed Hawk includes many small vertebrates (birds, especially passerines mammals, especially ground squirrels and chipmunks amphibians and reptiles, particularly the common collared lizard and crevice spiny lizard rarely fish) (Sherrod 1978). They are aggressively territorial during nesting season, when nestlings are present. Male and female hawks are very aggressive when guarding the nest. As mentioned in the Reproduction section, acrobatic courtship “dances” are performed between the two sexes. 2000)ĭisplays over potential breeding habitat consisted of circling, screams, talon grappling, and tumbling toward the earth between two Zone-tailed Hawk (Hubbard 1974), called “whirling” by Brown and Amadon (1968). Growth is gradual to slow during first 7 days between days 7-21, growth is rapid. (Baicich and Harrison 1997 Johnson et al. Female parent incubates, while male parent collects food for the female and young. Young are semi-altricial at hatching, with grey down.
gonochoric/gonochoristic/dioecious (sexes separate). While in the southwestern United States these hawks breed only once, not much is known about their breeding habits in South America except that year-round residents breed only once.(Johnson et al. Female Zone-tailed Hawks lay one or two eggs per clutch. Heights of up to 500 m are achieved during these ritualized interactions between male and females. During these displays aerial loops, dives, and rolls are performed. The Zone-tailed Hawk engages in spectacular courtship displays. The immature hawk has many narrow blackish bands on tail. The immature hawk is a little darker with white spots around head and on under parts. The female is slightly larger than the males of this species. The legs and beak of the Zone-tailed Hawk are yellow. The under-wing is two-toned with black wing tips. The tail has 2 to 3 light bands that are white when viewed from below. The Zone-tailed Hawk is a dark hawk (black with brown cast) lacking the light morphology commonly found in many Buteo species. Riparian forest and woodland, desert uplands, and mixed conifer forests (Johnson et al. The Zone-tailed Hawk is found from the southwestern United States to Central and South America (Johnson et al.
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