Celebrate Earth day with a sunrise bird hike. Many backyard birds will be heard and seen but one species of note this time of year is the endangered Golden-cheeked Warbler. The Golden-cheeked Warbler nests exclusively in the Central Texas Hill Country and attracts birders from around the world. Take a slow-paced 1.5 hour hike around Water Trail and Main Loop to try and spot (but certainly hear) this bird. Reserve a spot at fosana.org or call for more information.