Warblers, flycatchers, tanagers, orioles, and nightjars nest here. Black Vultures have been seen.

A hot summer afternoon will bring a good variety of species to birders who sample the trails into the karst topography and restored oak woodlands and glades. Savannas, glades, woodland, Missouri’s 12th largest spring, lake frontage, lowlands and heights provide suitable habitat for nesting species and refuge for migrants. Warblers, flycatchers, tanagers, orioles, and nightjars nest here. Black Vultures have been seen. The Ha Ha Tonka Oak Woodland Natural Area makes up approximately 90% of the park’s acreage.

The park has 15 trails of varying lengths and difficulty of terrain. Most highlight features of the karst topography and woodlands. See the Birders' Guide for descriptions.