Check eBird for the full list. The High Island and Bolivar sanctuaries are eBird hotspots.
Reported birds: Neotropic Cormorant, Double-crested Cormorant, Anhinga, Brown Pelican, Great Blue Heron, Great Egret, Snowy Egret, Little Blue Heron, Tricolored Heron, Cattle Egret, White Ibis, Roseate Spoonbill, Swainson's Hawk, Purple Gallinule, Black-necked Stilt, Spotted Sandpiper, Forster's Tern, Yellow-billed Cuckoo, Ruby-throated Hummingbird, Eastern Wood-Pewee, Yellow-bellied Flycatcher, Least Flycatcher, Great Crested Flycatcher, Eastern Kingbird, Scissor-tailed Flycatcher, Loggerhead Shrike, White-eyed Vireo, Yellow-throated Vireo, Philadelphia Vireo, Red-eyed Vireo, Purple Martin, Barn Swallow, Carolina Wren, Blue-gray Gnatcatcher, Veery, Gray-cheeked Thrush, Swainson's Thrush, Gray Catbird, Ovenbird, Northern Waterthrush, Black-and-white Warbler, Swainson's Warbler, Tennessee Warbler, Common Yellowthroat, American Redstart, Cape May Warbler, Northern Parula, Magnolia Warbler, Bay-breasted Warbler, Blackburnian Warbler, Yellow Warbler, Chestnut-sided Warbler, Blackpoll Warbler, Black-throated Green Warbler, Canada Warbler, Summer Tanager, Scarlet Tanager, Northern Cardinal, Rose-breasted Grosbeak, Blue Grosbeak, Indigo Bunting, Red-winged Blackbird, Eastern Meadowlark, Boat-tailed Grackle, Orchard Oriole, and Baltimore Oriole.