Long-tailed Potoo vs Andean Potoo
Nyctibius aethereus เปรียบเทียบกับ Nyctibius maculosus
Side-by-Side Comparison
| คุณสมบัติ | Long-tailed Potoo | Andean Potoo |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Nyctibius aethereus | Nyctibius maculosus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Nyctibiidae | Nyctibiidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 66.4 cm (26.1 in) | 54.2 cm (21.3 in) |
| น้ำหนัก | 363.5 g (12.82 oz) | 174.0 g (6.14 oz) |
| อาหาร | Strictly nocturnal; waits motionless on a perch then sallies to catch large flying insects, mainly … | Perch-hunting nocturnal insectivore targeting large moths, beetles, and occasional bats in extended sallying flights from … |
| 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
Andean Potoo
Mournful wailing whistle; similar to Common Potoo but calls from Andean forest at higher elevations; slightly slower and lower-pitched; haunting descending phrase
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.
Andean Potoo
Found in the Andes from Venezuela and Colombia south to Bolivia at 1,500–3,400 m. Resident in montane cloud forest and forest edge. Uncommon.
สถานะการอนุรักษ์
Long-tailed Potoo
Andean 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 …
Andean Potoo
Dark brown upperparts with bold black and buff spotting forming mottled pattern; underparts brown with buff and white barring; more heavily spotted above than Common Potoo; Andean montane habitat reflected …
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.
Andean Potoo
A medium-sized potoo (33-38 cm) of Andean cloud forests from Venezuela to Bolivia, at elevations of 1,000-3,000 m. Darker plumage than Common Potoo with bolder markings. Nocturnal insectivore. A poorly known montane species; limited ecological information available.