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4_fingers accipitriform anthro avian backsack balls beak bent_over bird black_and_white butt facial_markings feathers fingers genitals head_markings hi_res komdog male markings martin_(martindosent)mask_(marking)monochrome motion_lines nervous non-mammal_balls presenting presenting_hindquarters raised_tail rear_view secretary_bird simple_background smile solo tail tail_feathers white_background wings