Photographer: John Bent, MD, Bronx, NY. This photograph of a saddle-billed stork couple was taken on a July 2005 family vacation in Zambia, Africa. One can determine the gender of these birds from their eye color: the females have yellow eyes, while the males' are dark.
Saddle-billed stork couple in Zambia. Arch Otolaryngol Head Neck Surg. 2006;132(4):367. doi:10.1001/archotol.132.4.367