San Bernard National Wildlife Refuge Professional Review and Guide
"The 24,455-acre national wildlife refuge contains a diversity of habitats that are especially important to wintering waterfowl; up to 100,000 Snow Geese can occur each year. More than 400 wildlife species have been recorded, including 250 bird species. Refuge waters also provide essential feeding and nursery areas for marine life. Water levels are manipulated through a series of dikes and water control structures at strategic marsh locations.
Key birds: Brown Pelican, Reddish Egret, White and White-faced Ibis, Roseate Spoonbill, Black-bellied Whistling-Duck, White-tailed Hawk, Crested Caracara, King and Black Rails, and Seaside Sparrow are present year-round. Magnificent Frigatebird, Least Bittern, Wood Stork, Fulvous Whistling-Duck, Purple Gallinule, Wilson’s Plover, Least Tern, Scissor-tailed Flycatcher, and Indigo and Painted Buntings occur in summer. American White Pelican; Bald Eagle; Peregrine Falcon; Yellow and Virginia Rails; Piping Plover; Short-eared Owl; Vermilion Flycatcher; Sprague’s Pipit; Palm Warbler; and LeConte’s, Nelson’s Sharp-tailed, and Fox Sparrows can usually be found in winter."