Will thought this was a beaver dam, but I suspect it is too small, and I did not see any evidence of a beaver house or den. Still, this small dam and another to its right out of the photo were clearly made by animals. This dam blocks a small stream that runs parallel to the Potomac in its overflow zone. I drive over the Chain Bridge at least once a week, and in the early morning this pond is almost always home to a Blue Heron that stands on the rock in the middle of the pond. The work of the muskrat or beaver that built this dam benefits the heron, the ducks that swim in the pond and probably many other animals and I am curious if these other animals reward the dam builders in some way.
Will thought this was a beaver dam, but I suspect it is too small, and I did not see any evidence of a beaver house or den. Still, this small dam and another to its right out of the photo were clearly made by animals. This dam blocks a small stream that runs parallel to the Potomac in its overflow zone. I drive over the Chain Bridge at least once a week, and in the early morning this pond is almost always home to a Blue Heron that stands on the rock in the middle of the pond. The work of the muskrat or beaver that built this dam benefits the heron, the ducks that swim in the pond and probably many other animals and I am curious if these other animals reward the dam builders in some way.
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