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anthro anus anus_focus avian backsack balls beak big_balls big_butt bird bodily_fluids butt butt_focus clairemilk corvid corvus_(genus)crow feathers genitals hair hi_res looking_back male musk oscine passerine perineum presenting presenting_anus presenting_hindquarters red_anus red_body red_eyes red_feathers red_hair simple_background solo sweat sweaty_anus sweaty_balls sweaty_butt sweaty_genitalia thick_thighs white_background