fauna and are serious conservation concerns. Birds: With some species migrating through in the spring and fall, others nesting in the spring and summer months, and still others wintering in the region, well over 300 species of birds occur in the Piney Woods. A few of the many year round residents include the wood duck (Aix sponsa), black vulture (Coragyps atratus), red-shouldered hawk (Buteo lineatus), American kestrel (Falco sparverius), wild turkey (Meleagris gallopavo), northern bobwhite (Colinus virginianus), American woodcock (Scolopax minor), greater roadrunner (Geococcyx californianus), red-cockaded woodpecker (Picoides borealis), loggerhead shrike (Lanius ludovicianus), northern mockingbird (Mimus polyglottos), brown thrasher (Toxostoma rufum), Carolina chickadee (Poecile carolinensis), brown-headed nuthatch (Sitta pusilla), pine warbler (Dendroica pinus), Bachman's sparrow (Aimophila aestivalis), and fish crow (Corvus ossifragus). Many additional species migrate from regions south and nest in the Piney Woods in the spring and summer, such as the anhinga (Anhinga anhinga), yellow-crowned night-heron (Nyctanassa violacea), little blue heron (Egretta caerulea), snowy egret (Egretta thula), purple gallinule (Porphyrula martinica), Chuck-will's-widow (Caprimulgus carolinensis), scissor-tailed flycatcher (Tyrannus forficatus), prairie warbler (Dendroica discolor), Swainson's warbler (Limnothlypis swainsonii), and painted bunting (Passerina ciris). Conversely, a different assemblage of birds migrate from the north to spend the winters months in the region, including the Canada goose (Branta canadensis), ring-necked duck (Aythya collaris), hooded merganser (Lophodytes cucullatus), blue-headed vireo (Vireo solitarius), Henslow's sparrow (Ammodramus henslowii), Le Conte's Sparrow (Ammodramus leconteii), and Smith's longspur (Calcarius pictus). A few species that once occurred in the region are now extinct like the passenger pigeon (Ectopistes migratorius), Carolina parakeet (Conuropsis carolinensis), ivory-billed woodpecker (Campephilus principalis), and Bachman's warbler (Vermivora bachmanii). Reptiles: The American alligator (Alligator mississippiensis) ranges throughout all but the northwestern most area of the region, however they are not particularly common in the forested habitat compared to their abundance in the open marshlands and prairies to the south. The Sabine map turtle (Graptemys sabinensis) is endemic: and among the many other turtles found in the region are the alligator snapping turtle (Macrochelys temminckii), chicken turtle (Deirochelys reticularia), false map turtle (Graptemys pseudogeographica), river cooter (Pseudemys concinna), three-toed box turtle (Terrapene triunguis), eastern mud turtle (Kinosternon subrubrum), razor-backed musk turtle (Sternotherus carinatus), and spiny softshell turtle (Apalone spinifera). Lizards occurring in the Piney Woods include the green anole (Anolis carolinensis), six-lined racerunner (Aspidoscelis sexlineatus), prairie lizard (Sceloporus conssbrinus), slender glass lizard (Ophisaurus attenuatus), and a number of skinks including the five-lined skink (Plestiodon fasciatus), broad-headed