Sickle-winged Nightjar vs Archbold's Nightjar
Eleothreptus anomalus 비교 대상 Eurostopodus archboldi
Side-by-Side Comparison
| 속성 | Sickle-winged Nightjar | Archbold's Nightjar |
|---|---|---|
| 학명 | Eleothreptus anomalus | Eurostopodus archboldi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Caprimulgidae | Caprimulgidae |
| 보전 상태 | Vulnerable | Least Concern |
| 체장 | — | — |
| 날개 폭 | 25.8 cm (10.2 in) | 41.0 cm (16.1 in) |
| 체중 | 43.7 g (1.54 oz) | 77.0 g (2.72 oz) |
| 식성 | Aerial insectivore; hawks moths and beetles at night over South American wet grassland and marshes. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 산란 수 | 2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sickle-winged Nightjar
Soft churring call; low-pitched, repetitive trill from grassland; males produce distinctive wing noise in display flight; vocalizations quiet compared to wing sounds
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
Geographic Range & Migration
Sickle-winged Nightjar
Resident of open marshland, wet grassland, and savanna from Paraguay and adjacent Bolivia south to Uruguay and northeastern Argentina.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
보전 상태
Sickle-winged Nightjar
Archbold's Nightjar
How to Tell Them Apart
Sickle-winged Nightjar
Male with extraordinarily elongated sickle-shaped outer primaries; dark brown with buff mottling; white throat and wing spots. Female brown with buff spots; normal wing shape; male wing shape unique among …
Archbold's Nightjar
Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.
About These Birds
Sickle-winged Nightjar
작은 쏙독새과(~44g) 새로 남아메리카 남부의 습한 팜파 초원과 습지에 서식. 주로 야행성이며 날아다니는 곤충을 잡아먹는다. 취약종.
Archbold's Nightjar
뉴기니아 아고산 초원과 숲에 서식하는 소형 쏙독새(~77g). 아치볼드야행소쏙독새라고도 불린다. 관심필요종.