The Great Potoo (Nyctibius grandis) is a nocturnal, insectivorous bird found in forests from southern Mexico to northern South America. It is best identified by its large head, broad beak, and marbled gray, black, and burgundy plumage that mimics tree bark. During the day, it perches motionless high in trees; at night, it hunts flying insects from lower branches.
Learn to identify
Great Potoo perched at night in Mato Grosso, Brazil.
Learning lesson · openly licensed photographs, labelled by BirdBot; labels checked against the cited sources and approved by AI
Large eye, big head: very large eyes on an oversized head. Short, broad bill: small-looking, but opens to a huge gape. Pale marbled plumage: white to grey, marbled black and brown. Long tail: coloured like the body, with pale cross-bars. Biggest potoo: pale, marbled and huge-eyed.
Sexes look alike; by day it sits still, resembling part of a stump.
Sources: Wikipedia: Great potoo (revision 1382249980) · Animal Diversity Web: Nyctibius grandis (great potoo) · Birds of the World: Great Potoo (Introduction)
Photo: Hector Bottai, CC BY-SA 4.0, via Wikimedia Commons; labels added by BirdBot.
Great Potoos are masters of camouflage. Their plumage is white to grayish with marbled black and burgundy tones, blending seamlessly with the bark of large trees. Key identification features include:
Field Tip: During the day, look for a motionless bird perched high in a large tree, often on a branch 20 to 30 cm in diameter. The bird’s stillness is a deliberate strategy to enhance its cryptic coloration. If you spot a "broken branch" that has large, forward-facing eyes, you have likely found a Great Potoo.
Great Potoos inhabit forests and rainforests, including forest edges and areas around farmlands. Their range extends from far southern Mexico to northern Bolivia, Paraguay, and southeastern Brazil, according to AviList v2026.
They exhibit a distinct vertical habitat shift:
Great Potoos are solitary and strictly nocturnal. Their only observed social interactions occur between parents and young during provisioning. They are carnivores, feeding primarily on large flying insects and occasionally bats.
Hunting Strategy: From a lower perch, the bird sallies into the air to engulf prey in its large gape, then returns to the perch to consume it. Hunting perches are usually in close proximity to daytime roosts, though the exact size of their home ranges is not known.
Anti-Predator Behavior: When threatened, Great Potoos freeze to enhance their camouflage. This behavior is particularly pronounced during nesting, when they reduce movement to a minimum unless disturbed.
Field Observation Note: While the specific mechanics of their sallying flight are well-documented in natural history accounts, precise home range sizes remain unstudied. Observers should note that the bird's stillness during the day is a deliberate strategy to enhance its cryptic coloration, making it nearly indistinguishable from a broken branch.
Vocalizations occur mostly at night and are assumed to communicate territorial boundaries. The repertoire includes:
Great Potoos are monogamous with no sexual dimorphism; the sexes are so similar that time budgeting at the nest per sex has not been determined. They do not build nests but lay a single egg in a deep notch in a large branch of their roosting tree.
The Great Potoo is listed as Least Concern (LC) in AviList v2026. This status reflects its broad geographic range across Neotropical forests. While specific population trends are not detailed in the current sources, the species is not currently considered threatened globally.
Because Great Potoos rely on stillness and camouflage for survival, ethical observation requires patience and distance. During the day, observe quietly from a distance, looking for motionless birds perched high in trees. Do not attempt to approach or disturb nesting sites, as the birds freeze when threatened, a behavior that can be stressed by human presence. At night, maintain a respectful distance to avoid disrupting their hunting activities.
_-_48163711161.jpg){kind=link}
.jpg){kind=link}