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A great spangled fritillary (Speyeria cybele), Valley Forge National Historical Park, 2014.

From a distance, it may be hard to distinguish the great spangled fritillary from the similarly brightly-colored monarch butterfly. However, fritillaries tend to fly faster with more rapid beats while the monarch butterfly glides between wing beats.

U.S. National Park Service

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Valley Forge National Historical Park, Code: VAFO

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Title: Valley Forge National Historical Park
URL: https://www.facebook.com/ValleyForgeNHP

20140723

07/23/2014

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Organization: Valley Forge National Historical Park
Address: 1400 North Outer Line Drive, King of Prussia, PA 19406

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