Gray/Purple Heron vs St. James' shell

Ardea cinerea compared with Pecten maximus

Taxonomic Classification

Rank	Gray/Purple Heron	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Pelecaniformes (Pelecaniformes)	Pectinida (Pectinida)
Family	Ardeidae	Pectinidae
Genus	Ardea	Pecten
Species	Ardea cinerea	Pecten maximus

Evolutionary Relationship

Gray/Purple Heron and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Gray/Purple Heron

LC — Least Concern

Trend: Stable →

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Gray/Purple Heron	St. James' shell
Diet	Carnivore	—
Average Lifespan	15 years	—
Average Length	95 cm	—
Average Weight	1.5 kg	—

Habitat & Geographic Range

Gray/Purple Heron

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries).

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).

Gray/Purple Heron

A large, elegant wading bird reaching up to 1 meter in height, gray herons inhabit wetlands, rivers, lakes, and coastal areas across Europe, Asia, and Africa. Patient, solitary hunters, they stand motionless for long periods before striking fish, frogs, and small mammals with lightning-fast dagger bill strikes. They nest colonially in tall trees in rookeries called heronries, sometimes shared with other colonial waterbirds. Widely distributed and of Least Concern globally.

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.