Sparrow Camp, lead by Dr. Byron Stone and co-leaders of Friends of the Balcones Canyonland NWR's SparrowFest near Austin. Workshop fee includes donation to the Friends group, meals from Friday dinner/desert to Sunday breakfast, sparrow ID class, three field trips on 2 private ranchs, onsite housing also available. Early Bird Special through Jan. 31.

Info: Sandy Skrei. stay@highhoperanch.com, cell: 512-554-7421, office, 254-898-4296.

Join us for a shoreline and trail clean. Entrance is free and bags, gloves and tools will be provided.

READ THE GREENSOURCEDFW.ORG ARTICLE ABOUT CLEANER PARKS

$8-$10. Registration required for all programs. Info: Tiffany Gorrell, tiffany.gorrell@mansfieldtexas.gov

$8-$10.

Info: Tiffany Gorrell, tiffany.gorrell@mansfieldtexas.gov

Beginners and experts alike can enjoy looking for water loving birds in winter. Many species including ducks, grebes, pelicans, osprey and herons spend the colder months on the Refuge. Bring your binoculars or rent some from us. $5 (with paid admission)

The Trinity Bird Count seeks to inventory the various bird species that use the Metroplex stretch of the Trinity River in order to inform bird habitat conservation and management along the river. Since 2011, birders have shared observations for more than 250 bird species!

Annual hike from end-to-end of 160-acre prairie remnant.

This will be a fun hike as we explore nature and the signs the wildlife have left behind.

Enjoy a guided hike around Penn Farm and learn about Cedar Hill State Park in a different light. Hear about nocturnal animals, listen for owls, tell star stories, and more! Meet at the Penn Farm parking lot.

Discover how native plants were used by people and wildlife thought the history of the area. Join a Ranger and lean about North Texas Nature.

Meet at the Penn farm parking lot.