Brown Booby vs Lesser Noctule

Sula leucogaster compared with Nyctalus leisleri

Key Differences

• Brown Booby is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Brown Booby	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Suliformes (Suliformes)	Chiroptera (Bats)
Family	Sulidae	Vespertilionidae
Genus	Sula	Nyctalus
Species	Sula leucogaster	Nyctalus leisleri

Evolutionary Relationship

Brown Booby and Lesser Noctule share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Booby

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Brown Booby	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Booby

Habitat

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

Range

Widely distributed across Europe (Denmark, Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Booby

Brown Booby (Sula leucogaster) 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.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇸🇪 Sweden