Irrawaddy dolphin vs Lesser Nighthawk

Orcaella brevirostris compared with Chordeiles acutipennis

Key Differences

• Irrawaddy dolphin is Endangered while Lesser Nighthawk is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Lesser Nighthawk
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Caprimulgiformes (Caprimulgiformes)
Family	Delphinidae (Oceanic Dolphins)	Caprimulgidae
Genus	Orcaella	Chordeiles
Species	Orcaella brevirostris	Chordeiles acutipennis

Evolutionary Relationship

Irrawaddy dolphin and Lesser Nighthawk share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Lesser Nighthawk

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Lesser Nighthawk
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Lesser Nighthawk

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Lesser Nighthawk

Lesser Nighthawk (Chordeiles acutipennis) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.