Wednesday, July 29, 2015
| Owl Prowl | |
| Location: | Mason Neck National Wildlife Refuge - Great Marsh Trail |
| Time: | 8pm to 9pm |
| Description: | Meet at the Great Marsh Trailhead, off Gunston Road near the entrance to Hallowing Point. Guided after-hours walk in the woods, listening for things that go "HOOT" in the night.
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