Primary purpose of the refuge is to preserve the nesting habitat of the migratory endangered golden-cheeked warbler and black-capped vireo. The Refuge is open for daylight use only. The warbler may be seen on hiking trails at Warbler Vista and Doeskin Ranch public use areas. The vireo may be seen at Shin Oak Observation Deck, excluding the period from the end of March through mid-April to allow vireos to set up nesting territories. This deck and Doeskin Ranch are closed for four weekends from mid-Nov. through mid-Dec. during Big Game hunting season. The Refuge is a sponsor of the Texas Songbird Festival in April 2006 and National Wildlife Refuge Week during the first two weekends in October. From U.S. 183, take F.M. 1869 approximately 9 miles to the observation deck; Warbler Vista is west of Lago Vista on FM 1431. Please call prior to visiting for exact dates, or vist the website.