Freckled Nightjar vs Heinrich's Nightjar
Caprimulgus tristigma 对比 Eurostopodus diabolicus
Side-by-Side Comparison
| 属性 | Freckled Nightjar | Heinrich's Nightjar |
|---|---|---|
| 学名 | Caprimulgus tristigma | Eurostopodus diabolicus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 34.4 cm (13.5 in) | 39.9 cm (15.7 in) |
| 体重 | 79.88333333333334 g (2.82 oz) | 104.0 g (3.67 oz) |
| 食性 | Nocturnal aerial insectivore, hawking moths, beetles, and other flying insects in sustained sallying flight over … | Nocturnal aerial insectivore; catches moths and beetles in flight over Sulawesi forest; poorly known. |
| 产卵数 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Freckled Nightjar
Loud, dog-like 'bow-wow' or 'woof-woof'; unusual barking call for a nightjar; carries across rocky African outcrops; alarm a sharp 'chek'; distinctive among all nightjars
Heinrich's Nightjar
Haunting, hollow 'ku-WOO' repeated rhythmically; deep resonant quality; distinctive mournful whistle carrying through Sulawesi forest at night
Geographic Range & Migration
Freckled Nightjar
Found in Borneo and Sumatra in lowland rainforest and peat swamp forest. Rare and seldom recorded; possibly resident year-round.
Heinrich's Nightjar
Endemic to Sulawesi, Indonesia; resident of montane forest; extremely rare and poorly known, with very few records.
保护状况
Freckled Nightjar
Heinrich's Nightjar
How to Tell Them Apart
Freckled Nightjar
Heavily freckled dark grey and black upperparts resembling granite surfaces; whitish throat patch; underparts densely barred dark and pale; uniquely dark stone-coloured cryptic plumage adapted to rocky outcrops in Africa.
Heinrich's Nightjar
Rufous-brown and dark brown mottled with buff vermiculations; large pale buff throat patch; pale buff supercilium; no white wing markings; tail darkly barred brown and buff. Poorly known; Sulawesi endemic.
About These Birds
Freckled Nightjar
雀斑夜鹰，体长25–28厘米，分布于撒哈拉以南非洲岩石山地和巨石丘陵，灰褐斑点如地衣。
Heinrich's Nightjar
中型夜鹰（约104克），印度尼西亚苏拉威西特有种。夜行性食虫鸟。无危。