Brown Booby vs Noctule

Sula leucogaster compared with Nyctalus noctula

Key Differences

• Brown Booby is Least Concern while Noctule is Vulnerable.

Taxonomic Classification

Rank	Brown Booby	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 noctula

Evolutionary Relationship

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

Conservation Status

Brown Booby

LC — Least Concern

Noctule

VU — Vulnerable

Physical Characteristics

Attribute	Brown Booby	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).

Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable 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.

Noctule

Noctule (Nyctalus noctula) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden