Great Potoo vs Rufous Potoo
Nyctibius grandis 比較対象 Phyllaemulor bracteatus
Side-by-Side Comparison
| 属性 | Great Potoo | Rufous Potoo |
|---|---|---|
| 学名 | Nyctibius grandis | Phyllaemulor bracteatus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Nyctibiidae | Nyctibiidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 74.8 cm (29.4 in) | 32.5 cm (12.8 in) |
| 体重 | 492.0 g (17.35 oz) | 50.666666666666664 g (1.79 oz) |
| 食性 | Nocturnal insectivore and occasional small vertebrate predator; hunts from perch by sight, targeting large moths … | Night hunter using still-perch strategy; catches large moths, beetles, and flying bugs in single powerful … |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Rufous Potoo
Wailing, mournful whistle; descending 'woooo' with eerie quality; calls solitarily at night from Amazonian forest; softer and higher than Great Potoo; haunting tone
Geographic Range & Migration
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.
Rufous Potoo
Found in the Amazon basin from Colombia and Venezuela south to Bolivia and Brazil. Resident in lowland tropical rainforest; camouflaged by day.
保全状況
Great Potoo
Rufous Potoo
How to Tell Them Apart
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.
Rufous Potoo
Distinctly rufous-chestnut overall with dark brown streaks and pale buff vermiculations; underparts paler rufous with dark barring; large yellow eyes; richest coloration among potoos, unlike the greyer larger species.
About These Birds
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.
Rufous Potoo
A small potoo (21-25 cm) of lowland tropical forests from Costa Rica to Brazil. Warm rufous-brown plumage with intricate barring. Nocturnal insectivore, perching motionlessly during the day to resemble a broken branch. The smallest and most colorful member of the potoo family.