DescriptionNesting Trumpeter Swan on Seedskadee NWR (24217525405).jpg
The pen, or female trumpeter swan, incubating eggs on a nest at Seedskadee NWR. The eggs are days away from hatching. Trumpeter swans, especially young pairs, can be sensitive to human disturbance, and may abandon a nest. This pair chose a location that could be viewed without disturbing them. Photo: Tom Koerner/USFWS
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