13/08/2026
🇸🇷The Great Potoo (Nyctibius grandis) is one of the most distinctive nocturnal birds found in Suriname.
Known locally across parts of South America for its eerie presence and master-level camouflage, it is the largest species of potoo in the world.
🇸🇷. Appearance & Physical Characteristics
* Size: It grows up to 48–58 cm (nearly 2 feet) long with a wingspan of over 70 cm.
* Camouflage:
Its plumage consists of a intricate pattern of pale grey, white, buff, and blackish lines, mimicking tree bark or dried wood almost perfectly.
* Eyelid "Windows":
Potoos have tiny slits/notches in their upper eyelids. This allows them to detect movement nearby even while sitting with their eyes completely closed during the day.
* Mouth and Eyes:
They have huge yellow eyes that reflect bright orange/red under a flashlight at night, and a massive, wide gape designed to trap large prey mid-flight.
2. Behavior & Habitat in Suriname
* Where They Live:
They inhabit Suriname’s lowland rainforests, forest edges, riverbanks, and secondary growth forests, as well as nature areas like Peperpot or along major rivers (e.g., Suriname River, Commewijne).
* Daytime Roosting: During the day, the Great Potoo perches high up in big trees (usually 12+ meters above ground). It points its beak straight upward and holds completely still, making it look like a broken branch or stump.
* Nighttime Hunting:
At night, it moves to lower perches (1.5–3 meters off the ground). When it spots prey, it darts out into the air (sallying) to sn**ch it before returning to the same branch.
* Diet: Unlike smaller nightjars that mainly eat small insects, the Great Potoo's huge mouth allows it to feed on large beetles, katydids, cicadas, and occasionally even small bats or birds.
3. Nesting & Reproduction in Suriname
* Season: In Suriname, nesting is typically observed around November (during the wet/transition period).
* No Nest:
They build no structure.
The female lays a single white, spotted egg directly into a hollow or shallow knot on a thick tree branch. Both parents take turns incubating and protecting the single chick.
4. Distinctive Calls
The Great Potoo is famous for its unsettling vocalizations heard on moonlit nights:
* A deep, guttural growl or moaning sound ("baaaao" or "kwaaahw").
* A harsh, barking or groaning "whoap".
Because of these haunting calls, potoos are often linked to local folklore and ghost stories across tropical South America.
