Chimney Swift vs Common Least Skipper

Chaetura pelagica compared with Ancyloxypha numitor

Key Differences

• Chimney Swift is Near Threatened while Common Least Skipper is Least Concern.

Taxonomic Classification

Rank	Chimney Swift	Common Least Skipper
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Apodiformes (Apodiformes)	Lepidoptera (Butterflies & Moths)
Family	Apodidae	Hesperiidae
Genus	Chaetura	Ancyloxypha
Species	Chaetura pelagica	Ancyloxypha numitor

Evolutionary Relationship

Chimney Swift and Common Least Skipper share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chimney Swift

NT — Near Threatened

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Chimney Swift	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chimney Swift

Habitat

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

Range

Widely distributed across Europe (Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Chimney Swift

Chimney Swift (Chaetura pelagica) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Common Least Skipper

The Common Least Skipper (<em>Ancyloxypha numitor</em>) is a small butterfly in the family Hesperiidae, classified as Least Concern on the IUCN Red List. It is native to Canada and the United States, where it typically inhabits virtually all terrestrial and freshwater habitats within its range, showing a particular affinity for moist, grassy areas near water. The species is among the smallest skippers in North America, characterized by orange and brown wing coloration and a rapid, low-flying flight pattern close to vegetation. Adults typically nectar on small flowers while larvae feed on grasses, particularly those in wet meadows, marshes, stream margins, and disturbed grassy areas. The Common Least Skipper is frequently observed in wetland margins, wet prairies, and roadsides with rank grass growth. Its wide distribution across North America and habitat generalism across moist grassland and wetland types support its stable population and Least Concern conservation status. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States