Least Nighthawk vs Spotted Nightjar
Chordeiles pusillus เปรียบเทียบกับ Eurostopodus argus
Side-by-Side Comparison
| คุณสมบัติ | Least Nighthawk | Spotted Nightjar |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Chordeiles pusillus | Eurostopodus argus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Caprimulgidae | Caprimulgidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 25.0 cm (9.8 in) | 42.7 cm (16.8 in) |
| น้ำหนัก | 29.733333333333334 g (1.05 oz) | 102.5 g (3.62 oz) |
| อาหาร | Catches small flying insects in aerial pursuit over South American scrub and open areas; crepuscular. | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| จำนวนไข่ | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Least Nighthawk only
ไม่มี
Spotted Nightjar only
Song & Call Comparison
Least Nighthawk
High-pitched, buzzy trill; thin 'pee-pee-pee' series; soft churring from ground; tiny size matched by high, reedy call quality; rarely loud
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Geographic Range & Migration
Least Nighthawk
Resident of open savanna and cerrado in interior South America from Venezuela and the Guianas south to Bolivia and central Brazil.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
สถานะการอนุรักษ์
Least Nighthawk
Spotted Nightjar
How to Tell Them Apart
Least Nighthawk
Smallest Chordeiles; brown and buff mottled above; pale buff underparts with dark barring; small white throat patch in male; narrow white wing bar; white or buff tail spots. Female has …
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
About These Birds
Least Nighthawk
The smallest Chordeiles nighthawk (~30 g), family Caprimulgidae, inhabiting open cerrado, caatinga, and rocky savanna in eastern and central South America. Very small with brown and buff cryptic plumage; white tail band in males. Hunts small insects aerially at dusk. Least Concern in open lowland habitats.
Spotted Nightjar
A medium Caprimulgidae nightjar (~103 g) of open woodland, spinifex grassland, and rocky ridges across mainland Australia. Intricately spotted and barred brown, grey, and buff. Cryptic by day on the ground among leaf litter. Crepuscular and nocturnal; feeds on flying insects caught in aerial pursuit. Least Concern.