Interior Least Tern Pair at White Rock Lake Dallas, Texas

Interior Least Tern (Sterna antillarum athalassos) pair at Dallas White Rock Lake Park 7/24/18. Listed as an endangered species. 8 individuals of this species were spotted on this visit.

Least Terns are the smallest North American terns. Adults average 8 to 10 inches in length, with a 20 inch wingspan. Their narrow, pointed wings make them streamlined flyers. Males and females are similar in appearance.

The Interior Least Tern is primarily a fish-eater, feeding in shallow waters of rivers, streams, and lakes. The birds are opportunistic and tend to select any small fish within a certain size range. Feeding behavior involves hovering and diving for small fish and aquatic crustaceans, and occasionally skimming the water surface for insects.

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