Chuck-will's-widow vs Common Gromwell

Antrostomus carolinensis compared with Lithospermum officinale

Key Differences

Chuck-will's-widow is Least Concern while Common Gromwell is Near Threatened.

Taxonomic Classification

Rank	Chuck-will's-widow	Common Gromwell
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Magnoliopsida (Dicots)
Order	Caprimulgiformes (Caprimulgiformes)	Boraginales (Boraginales)
Family	Caprimulgidae	Boraginaceae
Genus	Antrostomus	Lithospermum
Species	Antrostomus carolinensis	Lithospermum officinale

Conservation Status

Chuck-will's-widow

LC — Least Concern

Common Gromwell

NT — Near Threatened

Physical Characteristics

Attribute	Chuck-will's-widow	Common Gromwell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chuck-will's-widow

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

Common Gromwell

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Asia (Japan), Europe (7 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Colombia). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chuck-will's-widow

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.

Common Gromwell

<em>Lithospermum officinale</em>, commonly known as common gromwell, is a herbaceous perennial plant belonging to the genus Lithospermum within the family Boraginaceae. This species occupies diverse terrestrial habitats from tropical forests to temperate regions and has a broad intercontinental range, including Japan in Asia, seven European countries, Canada and the United States in North America, Australia in Oceania, and Colombia in South America. Notably, <em>Lithospermum officinale</em> is assessed as Near Threatened on the IUCN Red List, indicating that while it does not currently meet the criteria for a threatened category, it is close to qualifying or is likely to qualify in the near future without ongoing conservation attention. The species typically favors dry, calcareous grasslands and open scrubland. Biological traits of this species remain poorly documented in the scientific literature.