More than 150 bird species may be seen either on the South Llano River State Park or the Buck Area during different periods of the year. The endangered Black-capped vireo and the common Western Screech Owl have been documented on the Buck Area for the past several years. There is one birding blind located within the South Llano River State Park and one located in the Buck Area. Both blinds have water and feed, which attract many different bird species.
Wildlife movements are at the highest during dawn and dusk hours of the day. Wildlife viewing may be difficult during periods of good forage conditions within the dense vegetation of the Buck Area. Visitors may want to visit any of the water sources found on the Buck Area early in the morning or late afternoon in order to improve their odds of viewing wildlife.