Work Days are held once a month, October through March on the second Saturday of the month. We start work around 8:30 AM and work until about noon, when we break for lunch, provided by Houston Audubon and prepared by the lunch crew. Â After lunch, we take about an hour to tie up any loose ends and clean up. Come be a part of sanctuary maintenance, habitat restoration, and Houston Audubon’s amazing volunteer workforce. How to sign up.