Common Least Skipper vs 小灰眉夜鹰

Ancyloxypha numitor compared with Chordeiles acutipennis

Taxonomic Classification

Rank	Common Least Skipper	小灰眉夜鹰
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Arthropoda (节肢动物门)	Chordata (脊索动物门)
Class	Insecta (昆蟲綱)	Aves (鳥綱)
Order	Lepidoptera (鱗翅目)	Caprimulgiformes (夜鷹目)
Family	Hesperiidae	Caprimulgidae
Genus	Ancyloxypha	Chordeiles
Species	Ancyloxypha numitor	Chordeiles acutipennis

Evolutionary Relationship

Common Least Skipper and 小灰眉夜鹰 share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Common Least Skipper

LC — Least Concern

小灰眉夜鹰

LC — Least Concern

Physical Characteristics

Attribute	Common Least Skipper	小灰眉夜鹰
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

小灰眉夜鹰

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

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.

小灰眉夜鹰

小蟾蜍夜鹰（Chordeiles acutipennis）被IUCN红色名录列为无危（LC）物种。在其分布范围内广泛分布，种群数量丰富稳定，无紧迫的保护问题。