Nature Center. The hooded warbler, pileated woodpecker, and ruffed grouse nest in the park. Goldfinches and northern cardinals can be seen at feeders near the Nature Center. The pileated woodpecker, Acadian flycatcher, eastern wood pewee, white-breasted nuthatch, wood thrush, and yellow-billed cuckoo can all be observed in the park's Ogle Hollow Nature Preserve. Owls and woodpeckers are known to occupy sycamore trees. The cerulean warbler, whippoorwill, and broad-winged hawk all live in the Ten O'Clock Nature Preserve. Wild turkeys can be seen (and heard) along the park's Trail 10, known as the Fire Tower Trail. Other bird species in the park include the blue jay, the crow, the junco, the white-breasted nuthatch, and the robin. Geology Glaciers from the most recent ice ages did not reach south far enough to flatten the land in Brown County, though glacier meltwater helped deepen gullies in the region, and made hills steeper. Brown County State Park's Weed Patch Hill is the highest point in the area, at above sea level. The region is part of the Knobstone Escarpment land form, which consists of steep hills and valleys located between northern Brown County and the Ohio River. The rocks in this area contain significant amounts of silica, and were part of a large delta system over 330 million years ago. Brown County's rocks are part of the Borden Group, and are mostly siltstone. Limestone, dolomite, and chert are the Borden Group's secondary rocks. Climate The Brown County area has a humid subtropical climate, classified as "Cfa" in the Köppen climate classification system. Precipitation is somewhat evenly distributed throughout the year, and temperatures can be relatively high. The record high temperature over the last 99 years for county seat Nashville is . The record low over the last 99 years is . May is the month with the most precipitation, and February has the least. Most of the area's snowfall occurs in December, January, and February. Recreation and facilities Places to stay The park's Abe Martin Lodge, built in 1932, has 30 guest rooms, two lobbies, a gift shop, and a full-service restaurant. An annex to the lodge has 54 more rooms. An indoor water park was added recently. Rental cabins are available nearby. Each of 20 two-story family cabins can accommodate up to 8 people, and 56 rustic cabins are available. Campers have the choice of two classes of campgrounds—all with restrooms and showers.