Carolinanachtschwalbe vs Randfleck-Kleinspanner

Antrostomus carolinensis compared with Scopula marginepunctata

Key Differences

• Carolinanachtschwalbe is Least Concern while Randfleck-Kleinspanner is Critically Endangered.

Taxonomic Classification

Rank	Carolinanachtschwalbe	Randfleck-Kleinspanner
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Arthropoda (Gliederfüßer)
Class	Aves (Vögel)	Insecta (Insekten)
Order	Caprimulgiformes (Schwalmartige)	Lepidoptera (Schmetterlinge)
Family	Caprimulgidae	Geometridae
Genus	Antrostomus	Scopula
Species	Antrostomus carolinensis	Scopula marginepunctata

Evolutionary Relationship

Carolinanachtschwalbe and Randfleck-Kleinspanner share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Carolinanachtschwalbe

LC — Least Concern

Randfleck-Kleinspanner

CR — Critically Endangered

Physical Characteristics

Attribute	Carolinanachtschwalbe	Randfleck-Kleinspanner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Carolinanachtschwalbe

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

Randfleck-Kleinspanner

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Carolinanachtschwalbe

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.