Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.

Least Tern

Sterna antillarum

Charadriiformes; Laridae

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Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.

Juvenile, Bolsa Chica, Orange Co., 6-06. © John  C. Avise.

Juvenile, Bolsa Chica, Orange Co., 6-06. © John  C. Avise.

Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.

Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.

Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.

Chicks, Santa Ana River mouth, Orange Co., 6-07. © John  C. Avise.

Fledgling, Santa Ana River mouth, Orange Co., 7-06. © John  C. Avise.

Alternate plumage, Santa Ana River mouth, Orange Co., 6-06. © John  C. Avise.
 

Courtship and mating (video). Santa Ana River mouth, Orange Co., CA. 5-3-12.
© Peter J. Bryant

Courtship and mating (video). Santa Ana River mouth, Orange Co., CA. 5-7-12.
© Peter J. Bryant