Large female white turkey Large male white turkey
Caption: Large female (left) and male white turkeys, illustrating the difference in appearance between the sexes.
Photos courtesy: Agricultural Research Service, United States Department of Agriculture.
High-resolution 300 DPI JPEG - Female
High-resolution 300 DPI JPEG - Male

Male and female fruit flies (male on left)
Caption: Illustration of a male (left) and female fruit fly detailing the genetic differences in appearance between the sexes.
Illustration by: E. M. Wallace
High-resolution 300 DPI JPEG