Drake, alternate plumage, Santa Ana River mouth, Orange Co., 1-07. © John  C. Avise.

Red-breasted Merganser

Mergus serrator

Anseriformes; Anatidae

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Hen, Santa Ana River mouth, Orange Co., 1-07. © John  C. Avise.
Drake, basic plumage, Bolsa Chica, Orange Co., 10-07. © John  C. Avise.

Hen, Santa Ana River mouth, Orange Co., 7-06. © John  C. Avise.
Hen, Bolsa Chica, Orange Co., 2-07. © John  C. Avise.

Hen, Bolsa Chica, Orange Co., 2-07. © John  C. Avise.