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Common Tern Sterna hirundo Charadriiformes; Laridae Click on images for full screen Web design by Peter J. Bryant |
Transitional plumage, off Dana Point, Orange Co., 2-07. © John C. Avise. |
Alternate plumage, Trondheim, Norway, 5-09. © John C. Avise. |
Alternate plumage, Trondheim, Norway, 5-09. © John C. Avise. |