You should note that you have to ford the stream if you want to cross the river. it is not apparent from this site or any of the park literature that there are no bridges across the river. Maybe during parts of the year the water level is low enough to cross it easily, but in early April, you can’t cross the river without wet feet and legs (or a fall). 

The most sought-after bird in the park is the Golden-cheeked Warbler, but you might get lucky and spot the Canyon Wren. During the dry summer months, the Paluxy River dries up to several pools of clear water. At this time, you can find herons feeding on fish trapped in the shallow pools or early shorebirds foraging at the water's edge. In the summer, you'll find such birds as Yellow-billed Cuckoo, Great Crested Flycatchers, White-eyed Viero, Summer Tanager, and Painted Bunting. 

During migration. a variety of flycatchers, vireos, warblers, and sparrows are found at the water's edge.

The park is on the Lampasas Cut plain in Somervell County, contains 1,597 acres, nearly half of which is covered with evergreen Ashe Juniper woodlands. this large area of cider brake on hilly terrain is dissected by several drainages which empty into the Paluxy River, the park's primary watercourse. 

One of these tributary drainages, Deno Creek, contains habitat which harbors one of the most sought, after birds in the park, the Golden-cheeked Warbler. The visiting birder should look for the warbler between late March and late June along the Denio Creek and Ridge Trails.