The Shin Oak Observation Deck is set in the middle of excellent Black-capped Vireo habitat at the north end of the Balcones Canyonlands National Wildlife Refuge. The Observation Deck is open almost year around (excluding a few weekends in the fall). There are no hiking trails at this site, just a parking area, a short path to the deck, and the deck itself. Typically, 3 to 5 territories of Black-capped Vireos are established within earshot and viewing distance from the deck. With patience an observer can get good binocular looks at a bird and the birds can be heard singing almost continually. This is the only regularly available public viewing area for vireos in the Refuge.