Laurent Geslin / Red breasted merganser (Mergus serrator) male on Lake Geneva, near Geneva, Switzerland
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Laurent Geslin / Red breasted merganser (Mergus serrator) male grooming, on Lake Geneva, near Geneva, Switzerland
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Marie Read / Red-breasted Mergansers (Mergus serrator) male in foreground performing courtship display to female in background (left), Aurora, New York, USA, April.
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Martin Grimm/ BIA / Red-breasted Merganser (Mergus serrator) male taking flight, Mecklenburg-Vorpommern, Germany
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Markus Varesvuo / Pair of Red-breasted Merganser (Mergus serrator) on water, Iceland, June