Chuck-will's-widow vs Monarch

Antrostomus carolinensis compared with Danaus plexippus

Key Differences

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

Taxonomic Classification

Rank	Chuck-will's-widow	Monarch
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Caprimulgiformes (Caprimulgiformes)	Lepidoptera (Butterflies & Moths)
Family	Caprimulgidae	Nymphalidae (Brush-footed Butterflies)
Genus	Antrostomus	Danaus (Milkweed Butterflies)
Species	Antrostomus carolinensis	Danaus plexippus

Evolutionary Relationship

Chuck-will's-widow and Monarch share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chuck-will's-widow

LC — Least Concern

Monarch

NE — Not Evaluated

Trend: Decreasing ↓

Physical Characteristics

Attribute	Chuck-will's-widow	Monarch
Diet	—	Herbivore
Average Lifespan	—	1 years
Average Length	—	5 cm
Average Weight	—	0 g

Habitat & Geographic Range

Chuck-will's-widow

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

Monarch

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Asia (Taiwan), Europe (8 countries), North America (Canada, United States), and South America (Colombia).

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.

Monarch

One of the world's most remarkable migratory insects, monarch butterflies undertake multigenerational round-trip migrations of up to 4,800 km between breeding grounds in northern North America and overwintering sites in Mexican mountain forests. Brilliant orange and black wings warn predators of toxicity derived from milkweed plants consumed as caterpillars. Endangered, with overwintering populations having declined by over 80% since the 1990s due to milkweed habitat loss, pesticides, and climate change.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia