vs Chuck-will's-widow

Bacillus thuringiensis compared with Antrostomus carolinensis

Key Differences

• is Not Evaluated while Chuck-will's-widow is Least Concern.

Taxonomic Classification

Rank		Chuck-will's-widow
Kingdom	Bacteria (Bacteria)	Animalia (Animals)
Phylum	Firmicutes (Firmicutes)	Chordata (Chordates)
Class	Bacilli (Bacilli)	Aves (Birds)
Order	Bacillales (Bacillales)	Caprimulgiformes (Caprimulgiformes)
Family	Bacillaceae	Caprimulgidae
Genus	Bacillus	Antrostomus
Species	Bacillus thuringiensis	Antrostomus carolinensis

Conservation Status

NE — Not Evaluated

Chuck-will's-widow

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Sweden and Taiwan.

Chuck-will's-widow

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

Bacillus thuringiensis is a gram-positive, spore-forming soil bacterium in the family Bacillaceae, widely known for producing crystalline protein toxins (Cry proteins) that are insecticidal. It is globally distributed in soils, plant surfaces, and insect habitats. It is extensively used in biological pest control as a safe alternative to chemical insecticides.

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.