Great Reed Warbler vs St. James' shell

Acrocephalus arundinaceus compared with Pecten maximus

Key Differences

Great Reed Warbler is Critically Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Great Reed Warbler	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Passeriformes (Songbirds)	Pectinida (Pectinida)
Family	Acrocephalidae	Pectinidae
Genus	Acrocephalus	Pecten
Species	Acrocephalus arundinaceus	Pecten maximus

Evolutionary Relationship

Great Reed Warbler and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Great Reed Warbler

CR — Critically Endangered

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Great Reed Warbler	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Great Reed Warbler

Habitat

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

Range

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

St. James' shell

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

Great Reed Warbler

Great Reed Warbler (Acrocephalus arundinaceus) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.

St. James' shell

St. James' shell (Pecten maximus) 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.