Blue-footed booby

Blue-footed boobies are seabirds known for their sky blue feet. Their feet have a kind of web in between their toes.

Blue footed boobies use their bright blue feet to attract potential mates, and display overall health and fertility. Once a mate has been selected, they will use their feet to put on a courtship display. “Males and females have colorful feet that are displayed ostentatiously during courtship, both before and after pairing, and extrapair copulations are frequent.(Torres, Velando. 2004)

References

↑ Torres, Roxana; Velando, Alberto (2005-01-01). "Male preference for female foot colour in the socially monogamous blue-footed booby, Sula nebouxii". Animal Behaviour. 69 (1): 59–65. doi:10.1016/j.anbehav.2004.03.008. ISSN 0003-3472.

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[1] Torres, Roxana; Velando, Alberto (2005-01-01). "Male preference for female foot colour in the socially monogamous blue-footed booby, Sula nebouxii". Animal Behaviour. 69 (1): 59–65. doi:10.1016/j.anbehav.2004.03.008. ISSN 0003-3472.