Long-tailed Potoo vs Great Potoo
Nyctibius aethereus so với Nyctibius grandis
Side-by-Side Comparison
| Thuộc Tính | Long-tailed Potoo | Great Potoo |
|---|---|---|
| Tên Khoa Học | Nyctibius aethereus | Nyctibius grandis |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Nyctibiidae | Nyctibiidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 66,4 cm (26.1 in) | 74,8 cm (29.4 in) |
| Khối Lượng | 363,5 g (12.82 oz) | 492,0 g (17.35 oz) |
| Chế Độ Ăn | Strictly nocturnal; waits motionless on a perch then sallies to catch large flying insects, mainly … | Nocturnal insectivore and occasional small vertebrate predator; hunts from perch by sight, targeting large moths … |
| Số Trứng | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Long-tailed Potoo
Wailing, melancholy 'waaaa-waaaa'; descending mournful notes; calls from high forest canopy at night; lower and more drawn out than Common Potoo; eerie nocturnal sound
Great Potoo
Loud, haunting 'BWAAAOW'; booming wail; very large bird produces deep, resonant, mournful cry; carries far through tropical forest at night; deeply unsettling sound
Geographic Range & Migration
Long-tailed Potoo
Found in disjunct populations in eastern Brazil, the Amazon basin, and the Guiana Shield south to Bolivia. Resident in humid forest and forest edge.
Great Potoo
Found from Mexico and Trinidad south through Central America and South America to Argentina. Resident in forest edge and woodland up to 1,500 m.
Tình Trạng Bảo Tồn
Long-tailed Potoo
Great Potoo
How to Tell Them Apart
Long-tailed Potoo
Dark brown overall with heavy blackish streaks and pale buff mottling; underparts barred brown and buff; notably long tail projects well beyond wing tips; darker and browner than Great Potoo …
Great Potoo
Predominantly greyish-white with intricate black and brown vermiculations and streaks; underparts paler with fine dark freckling; large orange-yellow eyes; mimics broken branch when perched upright; largest potoo species.
About These Birds
Long-tailed Potoo
A large potoo (43-50 cm) with a notably long graduated tail. Rich brown plumage with dark streaking. Found in humid lowland and montane forests from Central America to Brazil. Nocturnal insectivore, catching large moths and beetles in sallying flights. Rare and seldom observed.
Great Potoo
The largest potoo (48-60 cm) with enormous eyes and a massive gape. Pale grey-brown plumage with bold streaks and vermiculations. Found in humid forests from Mexico to Brazil. Nocturnal insectivore with an extraordinary, deeply booming growling call. Perches upright on branches by day.