Sickle-winged Nightjar
Eleothreptus anomalus
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Giới Thiệu
A small Caprimulgidae nightjar (~44 g) of wet pampa grassland and marshes in southeastern South America. Males possess uniquely curved primary feathers creating a sickle-wing silhouette in flight. Inhabits dense grass over moist soils. Feeds on insects at dusk. Vulnerable from grassland drainage and conversion to cropland.
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| Chiều Dài Sải Cánh | 25,8 cm | 10.2 in |
| Khối Lượng | 43,7 g | 1.54 oz |
Nhận Dạng
Bộ Lông
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 nightjars.
Habitat & Range
Phạm Vi Địa Lý
Resident of open marshland, wet grassland, and savanna from Paraguay and adjacent Bolivia south to Uruguay and northeastern Argentina.
Diet & Feeding
Aerial insectivore; hawks moths and beetles at night over South American wet grassland and marshes.
Tình Trạng Bảo Tồn
Hành Vi & Sinh Sản
Số Trứng
2
Âm Thanh
Tiếng Hót
Soft churring call; low-pitched, repetitive trill from grassland; males produce distinctive wing noise in display flight; vocalizations quiet compared to wing sounds
Phân Loại Học
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| Bộ | Caprimulgiformes (Nightjars & Swifts) |
| Họ | Caprimulgidae (Nightjars) |
| Genus | Eleothreptus |
| Loài | Eleothreptus anomalus |
Distribution
Sickle-winged Nightjar has been recorded in 1 countries.
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External Databases
Câu Hỏi Thường Gặp
What does the Sickle-winged Nightjar eat?
Where does the Sickle-winged Nightjar live?
Is the Sickle-winged Nightjar endangered?
What does the Sickle-winged Nightjar sound like?
How big is the Sickle-winged Nightjar?
What order and family does the Sickle-winged Nightjar belong to?
Similar Birds
Other species in the Caprimulgidae family