David Welling / Brown-headed Cowbird (Molothrus ater) male perched on Cattail, Anahuac National Wildlife Refuge, Texas, USA, June

David Welling / Boat-tailed Grackle (Quiscalus major) male sitting in reeds singing and displaying,Anahuac National Wildlife Refuge, Texas, USA, June

Gerrit Vyn / Sora Rail (Porzana carolina) in breeding plumage foraging in a marsh. Anahuac National Wildlife Refuge, Texas, USA, March.

Gerrit Vyn / Common Moorhen (Gallinula chloropus) in breeding plumage foraging in a marsh. Anahuac National Wildlife Refuge, Texas, USA, March.

Doug Wechsler / Cattle Egret {Bubulcus ibis} feeding near cattle, Anahuac National Wildlife Refuge, Texas

Tom Vezo / Least Bittern (Ixobrychus exilis) among wetland plants, Anahuac National Wildlife Refuge, Texas

Tom Vezo / American Bittern (Botaurus lentiginosus) raising neck to achieve camouflage among reeds, Anahuac National Wildlife Reserve, Texas