Austin East Birding Sites Professional Review and Guide
"The three sites are located within the Austin city limits. The state park, only 13 miles from the state capitol, can be extremely crowded on weekends and holidays; birding is best in the early morning. Environmental education programs, centered around the Smith Visitor Center, are popular in summer. Significant park resources include two small waterfalls on Onion Creek, an Indian rock shelter, and a variety of trails: short interpretive trails; a paved, 3.7-mile hike-and-bike trail; and a more rugged 3-mile-long trail ideal for mountain biking.
Hornsby Bend is an active wastewater treatment plant, so you must be careful not to interfere with activities; birders are welcome. Only the front pond of the Walnut Creek plant is accessible. Key birds: Least Grebe, Wood and Mottled Ducks, and Green Kingfisher are present year-round. Chuck-will’s-widow, Black-chinned Hummingbird, Scissor-tailed Flycatcher, and Indigo and Painted Buntings occur in summer. American Woodcock and Fox and Harris’s Sparrows can usually be found in winter."