It has been years since I was a volunteer there but the Arboretum and Nature Center on Woodway (I believe) should be a good place. It is a safe place with ample trails through wooded trails and along the bayou. I don't remember much else.
Another good place of mixed habitat and one that is safe is Armand Bayou Preserve over off of Bay Area Blvd. near Pasadena/Clear Lake area.
If you make it down to Galveston or Boliver area, I;m sure there are plenty of shorebirds. Also, there is the Gray Wetlands Center in Baytown which should have some shorebirds. Plenty of water habitat along with some mixed woods along it's Eastern edges.
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