Wildlife & Habitat

Wildlife and Habitat

Home to an array of birds and other wildlife, the bottomland hardwood forest in Overflow National Wildlife Refuge is considered vital for the mallard, wood duck, and other waterfowl populations along the Mississippi Flyway. 

  • Waterfowl


    A variety of waterfowl use Overflow National Wildlife Refuge every year during migrations in the fall, winter and spring.  Mallard, pintail, gadwall, wigeon, green-winged teal, blue-winged teal, Northern shoveler, and wood ducks can be seen on a regular basis on the refuge foraging and roosting.  

  • Shorebirds


    Many species of shorebirds use Overflow NWR’s wetlands during the fall and spring migrations each year.  Greater and lesser yellowlegs, semipalmated sandpipers, pectoral sandpipers, long and short-billed dowitchers are just a few of the species that frequent the refuge on their migration routes. 

  • Bottomland Hardwood Forest

    Bottomland Hardwood Forest

    Bottomland hardwood forests cover just over 12,000 acres within Overflow NWR’s boundaries.  Willow oak and overcup oak are the dominant species.  Other species consist of nuttall oak, hickory, bald cypress, tupelo gum, and bitter pecan.  Acorn production is vital to wintering waterfowl as well as resident wildlife that reside on the refuge. 

  • Moist Soil Impoundments

    Moist Soil Impoundment

    Overflow NWR contains approximately 1,600 acres of wetlands and moist soil impoundments that are managed for waterfowl and shorebird habitat. The network of moist soil impoundments found within Overflow NWR are managed by refuge staff to grow native herbaceous wetland plants to support migratory birds during migration and wintering periods.  Seasonal flooding of moist soil impoundments generates favorable forage for migratory birds as they migrate south from the breeding grounds. 

  • Feral Hog Management on National Wildlife Refuges in Arkansas

    Feral Hogs

    What are feral hogs?
    Feral hogs (Sus scrofa) are domestic hogs that either escaped or have been released. They may be a hybrid of domestic hogs and introduced Russian boars. The rapidly expanding distribution of feral hogs in the United States has caused great concern for many land and resource managers. Feral hogs are an exotic species not native to North America.

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