Humblot's Heron Ardea humbloti

Large, all-dark heron with a pale bill. Generally rare, and usually seen alone. Found on freshwater lakes and wetlands, along rivers, and on coastal mudflats, mostly at low elevation. Similar in size to Gray Heron, but lacks conspicuous contrast in its plumage. Also similar to Purple Heron, but larger, thicker-billed, and without striping on the neck.