Chuck-will's-widow vs Clustered clover

Antrostomus carolinensis compared with Trifolium glomeratum

Key Differences

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

Taxonomic Classification

Rank	Chuck-will's-widow	Clustered clover
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Magnoliopsida (Dicots)
Order	Caprimulgiformes (Caprimulgiformes)	Fabales (Legumes & Allies)
Family	Caprimulgidae	Fabaceae
Genus	Antrostomus	Trifolium
Species	Antrostomus carolinensis	Trifolium glomeratum

Conservation Status

Chuck-will's-widow

LC — Least Concern

Clustered clover

NE — Not Evaluated

Physical Characteristics

Attribute	Chuck-will's-widow	Clustered clover
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.

Clustered clover

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (10 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Chile).

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.

Clustered clover

Trifolium glomeratum, the clustered clover, is an annual herb in the family Fabaceae native to the Mediterranean region, including southern Europe, North Africa, and southwestern Asia. Like other clovers, it has trifoliate leaves and produces small, globe-shaped flower heads composed of numerous tiny pink to purplish-pink pea-type flowers. The specific epithet glomeratum means 'clustered into a rounded mass,' referring to the tightly grouped flowerheads that remain sessile (stalkless) amid the upper leaves. The species grows in dry, disturbed ground, sandy fields, roadsides, grasslands, and coastal areas where soils are thin and nutrient-poor. T. glomeratum has been widely naturalized outside its native range, particularly in Australia, New Zealand, South Africa, and parts of North and South America, where it can become a common weed of agricultural margins and waste ground. Like all clovers, it fixes atmospheric nitrogen through root nodule bacteria, contributing to soil fertility. It has not been formally evaluated by the IUCN for conservation status. The species is palatable to livestock and may be grazed where abundant.