I agree with the Big Bend recommendation. Rio Grand Village is right on the Rio Grand River. From a couple place along the bank you can watch our southern neighbors. There's some nice hiking in area plus a hot springs up the road a piece. Lots of wildlife to watch. We've observed Cardinals, Road Runners, Coyotes, Bob Cat, Javalinas, Blue Herons. It's great place plus there's lots of nice people there that time of year.
Byron & Anne enjoying the everyday Saturday thing.