チャックウィルヨタカ vs Kleingrass

Antrostomus carolinensis compared with Panicum coloratum

Key Differences

チャックウィルヨタカ is Least Concern while Kleingrass is Not Evaluated.

Taxonomic Classification

Rank	チャックウィルヨタカ	Kleingrass
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Aves (鳥類)	Liliopsida (単子葉植物綱)
Order	Caprimulgiformes (ヨタカ目)	Poales (イネ目)
Family	Caprimulgidae	Poaceae (Grass Family)
Genus	Antrostomus	Panicum
Species	Antrostomus carolinensis	Panicum coloratum

Conservation Status

チャックウィルヨタカ

LC — Least Concern

Kleingrass

NE — Not Evaluated

Physical Characteristics

Attribute	チャックウィルヨタカ	Kleingrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

チャックウィルヨタカ

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Norway, and Venezuela.

Kleingrass

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Bhutan, India, Israel), Europe (4 countries), North America (Mexico, United States), and Oceania and the Pacific (Australia).

チャックウィルヨタカ

The Chuck-will's-widow (Antrostomus carolinensis) is the largest nightjar in North America, named for its distinctive far-carrying call — a resonant four-syllable whistle repeated persistently on warm nights. It breeds across the southeastern United States, from the Atlantic coastal plain through the Gulf states and up the Mississippi Valley to southern Indiana and Kansas. The species migrates southward in autumn to winter quarters in the Caribbean, Central America, and northern South America. Like all nightjars, it is a crepuscular and nocturnal insectivore, capturing large moths, beetles, and other flying insects in flight using its enormous, bristle-fringed gape. By day, the Chuck-will's-widow roosts on the ground or along horizontal branches, relying on cryptic mottled plumage for concealment. It nests directly on the leaf litter of open woodland and scrub, typically in pine-oak forests, dry forests, and woodland edges. The IUCN classifies this species as Least Concern, though Breeding Bird Survey data suggest moderate long-term population declines linked to forest fragmentation and light pollution that disrupts insect prey availability. Conservation of large-scale woodland tracts in the southeastern United States benefits this species and its associated nightjar community.