Two adult Trumpeter Swans attack a pair of immature swans on the Yellowstone River.

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One immature swan was looking like he was about to attack another one. The pair of mature swans took off and flew perhaps 100 yards to attack the one immature swan.

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Size: 4500px × 3035px
Location: Yellowstone River, Yellowstone National Park
Photo credit: © Noella Ballenger / Alamy / Afripics
License: Licensed
Model Released: No

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