A quick upload of an Inca Tern from Clifton Zoo Bristol.
The Inca Tern is a seabird in the family Sternidae. It is the only member of the genus Larosterna. This uniquely plumaged bird breeds on the coasts of Peru and Chile, and is restricted to the Humboldt current.... source Wikipedia.
A friendly bird that let me get close enough to grab this shot using a 50mm lens.