Arcane Spikethumb Frog vs Chuck-will's-widow

Plectrohyla sagorum compared with Antrostomus carolinensis

Key Differences

• Arcane Spikethumb Frog is Vulnerable while Chuck-will's-widow is Least Concern.

Taxonomic Classification

Rank	Arcane Spikethumb Frog	Chuck-will's-widow
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Aves (Birds)
Order	Anura (Frogs & Toads)	Caprimulgiformes (Caprimulgiformes)
Family	Hylidae	Caprimulgidae
Genus	Plectrohyla	Antrostomus
Species	Plectrohyla sagorum	Antrostomus carolinensis

Evolutionary Relationship

Arcane Spikethumb Frog and Chuck-will's-widow share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Arcane Spikethumb Frog

VU — Vulnerable

Chuck-will's-widow

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Arcane Spikethumb Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Chuck-will's-widow

Habitat

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

Range

Distributed across Colombia, Norway, and Venezuela.

Arcane Spikethumb Frog

The Arcane Spikethumb Frog (Plectrohyla sagorum) is a species in the genus Plectrohyla. It is currently classified as Vulnerable on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

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.