Birdwatching in United States.

428spp.92Ramsar wetlandTijuana River National Estuarine Research ReserveUnited States17 threatened species · Sep–Oct398spp.91Ramsar wetlandBolinas LagoonUnited States16 threatened species · Sep–Oct340spp.91bird observatoryWhitefish Point Bird ObservatoryUnited States16 threatened species · May381spp.91Ramsar wetlandElkhorn SloughUnited States16 threatened species · Sep–Oct364spp.90Ramsar wetlandTomales BayUnited States16 threatened species · Sep–Oct326spp.90Ramsar wetlandCape May National Wildlife RefugeUnited States13 threatened species · May, Oct354spp.89bird sanctuaryMontrose Point Bird SanctuaryUnited States14 threatened species · Apr–May, Sep–Oct306spp.89Ramsar wetlandConnecticut RiverUnited States16 threatened species · May, Sep–Oct345spp.89bird sanctuaryU Thant IslandUnited States13 threatened species · May, Oct305spp.89Ramsar wetlandPelican Island National Wildlife RefugeUnited States12 threatened species · Jan, Mar–Apr, Oct302spp.89Ramsar wetlandEmiquon National Wildlife RefugeUnited States13 threatened species · Apr–May295spp.89Ramsar wetlandQuivira National Wildlife RefugeUnited States15 threatened species · Apr–May295spp.89Ramsar wetlandCheyenne BottomsUnited States15 threatened species · Apr–May, Sep286spp.88Ramsar wetlandDixon Waterfowl RefugeUnited States11 threatened species · May, Sep271spp.88Ramsar wetlandEdwin B. Forsythe National Wildlife RefugeUnited States12 threatened species · May, Oct271spp.88Ramsar wetlandHoricon MarshUnited States12 threatened species · May261spp.88Ramsar wetlandMissisquoi National Wildlife RefugeUnited States13 threatened species · May248spp.87Ramsar wetlandThe Ridges SanctuaryUnited States11 threatened species · May232spp.87Ramsar wetlandSand Lake National Wildlife RefugeUnited States13 threatened species · May221spp.86bird sanctuaryFort WoolUnited States10 threatened species · Apr–May148spp.83Ramsar wetlandIzembek National Wildlife RefugeUnited States13 threatened species · Sep269spp.82Ramsar wetlandAsh Meadows National Wildlife RefugeUnited States7 threatened species · Apr–May, Sep–Oct259spp.80Ramsar wetlandCorkscrew Swamp SanctuaryUnited States6 threatened species · Mar–Apr, Oct256spp.80Ramsar wetlandLaguna de Santa RosaUnited States6 threatened species · Jan, Apr, Sep–Oct238spp.79Ramsar wetlandSan Francisco BayUnited States6 threatened species · Jan–Mar, Oct183spp.79Ramsar wetlandCatahoula LakeUnited States7 threatened species · Jan, Oct217spp.76Ramsar wetlandGrasslands Wildlife Management AreaUnited States5 threatened species · Feb, Apr198spp.74Ramsar wetlandCongaree National ParkUnited States4 threatened species · Apr–May, Sep–Oct186spp.73Ramsar wetlandOkefenokee National Wildlife RefugeUnited States4 threatened species · Apr179spp.73Ramsar wetlandDale Bumpers White River National Wildlife RefugeUnited States4 threatened species · Apr189spp.71Ramsar wetlandCaddo LakeUnited States3 threatened species · Dec177spp.71Ramsar wetlandUpper Mississippi River National Wildlife and Fish RefugeUnited States3 threatened species · May190spp.69Ramsar wetlandFrancis Beidler ForestUnited States2 threatened species · Apr155spp.63Ramsar wetlandEverglades National ParkUnited States3 threatened species · Feb151spp.63Ramsar wetlandBitter Lake National Wildlife RefugeUnited States2 threatened species · Apr–May133spp.62Ramsar wetlandCache River National Wildlife RefugeUnited States3 threatened species · Apr121spp.59Ramsar wetlandKawai Nui MarshUnited States5 threatened species · Dec–Mar35spp.39Ramsar wetlandPalmyra Atoll National Wildlife RefugeUnited States3 threatened species · Nov

Other places in United States

• Chesapeake Bay
• Delaware Bay
• Kawainui and Hamakua Marsh Complex
• Humbug Marsh
• Kakagon Sloughs
• Olentangy River Wetland Research Park
• Hornsby Bend Bird Observatory
• Henderson Bird Viewing Preserve
• Riverlands Migratory Bird Sanctuary
• Hanging Rock Raptor Observatory
• Arden Hills Army Training Site
• Roswell Artesian Wetlands