Long-tailed Potoo vs Common Potoo
Nyctibius aethereus เปรียบเทียบกับ Nyctibius griseus
Side-by-Side Comparison
| คุณสมบัติ | Long-tailed Potoo | Common Potoo |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Nyctibius aethereus | Nyctibius griseus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Nyctibiidae | Nyctibiidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 66.4 cm (26.1 in) | 51.3 cm (20.2 in) |
| น้ำหนัก | 363.5 g (12.82 oz) | 165.66666666666666 g (5.84 oz) |
| อาหาร | Strictly nocturnal; waits motionless on a perch then sallies to catch large flying insects, mainly … | Strictly nocturnal insectivore; hunts from a upright perch by detecting flying moths and large beetles … |
| จำนวนไข่ | 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
Common Potoo
Haunting, descending 'POOR-me-ONE'; mournful wail of 5-6 notes; iconic sound of Neotropical nights; calls from high snag; female answer slightly higher-pitched
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.
Common Potoo
Found across tropical South America east of the Andes south to Bolivia and Argentina. Resident in forest edge, savanna woodland, and open areas.
สถานะการอนุรักษ์
Long-tailed Potoo
Common 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 …
Common Potoo
Cryptic grey-brown upperparts with intricate black, buff, and white streaking; underparts pale with brown shaft streaks; large yellow eyes with slit pupils; polymorphic—some individuals more rufous-brown; masterful bark-mimic when roosting.
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.
Common Potoo
A medium-sized potoo (33-38 cm) widespread across Central and South America. Grey-brown plumage provides outstanding camouflage on tree stumps. Nocturnal insectivore with enormous eyes and wide gape. Famous for its eerie, descending mournful cry that carries through tropical forests at night.