It is a Double-crested cormorant.

Scientific name: Nannopterum auritum.

A large, dark waterbird with an elongated body, a long neck held in a gentle S-curve, and a slender grayish bill with a hooked tip. Adults are predominantly black to charcoal brown, with subtle bronze tones and a scaly appearance on the folded wing feathers. Bare yellow-orange skin marks the throat and base of the bill. The eyes are blue-green, and the short, dark legs end in fully webbed feet. A stiff, moderately long tail projects below the folded wings. Breeding adults may develop two small, wispy head crests, which are absent or inconspicuous outside the breeding season. The pictured bird is perched upright with its wings folded..

Double-crested cormorants pursue fish underwater using their webbed feet for propulsion. Their plumage retains some water, reducing buoyancy and helping them dive; they often perch with their wings spread after fishing..

The dark plumage, long curved neck, hooked bill, stiff tail, and upright posture beside open water identify this as a cormorant. The conspicuous orange throat patch, relatively robust neck, and apparent bill proportions favor a double-crested cormorant. A neotropic cormorant can look similar but generally has a proportionally longer tail and a more sharply defined, white-bordered throat patch. The image is somewhat soft, and no location is provided, so the species identification is not completely certain.