チャックウィルヨタカ vs Ochre Spreading Tooth

Antrostomus carolinensis compared with Steccherinum ochraceum

Taxonomic Classification

Rank	チャックウィルヨタカ	Ochre Spreading Tooth
Kingdom	Animalia (動物)	Fungi (菌界)
Phylum	Chordata (脊索動物)	Basidiomycota (担子菌門)
Class	Aves (鳥類)	Agaricomycetes (真正担子菌綱)
Order	Caprimulgiformes (ヨタカ目)	Polyporales (多孔菌目)
Family	Caprimulgidae	Steccherinaceae
Genus	Antrostomus	Steccherinum
Species	Antrostomus carolinensis	Steccherinum ochraceum

Conservation Status

チャックウィルヨタカ

LC — Least Concern

Ochre Spreading Tooth

LC — Least Concern

Physical Characteristics

Attribute	チャックウィルヨタカ	Ochre Spreading Tooth
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.

Ochre Spreading Tooth

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), North America (United States), and South America (Brazil).

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.