Common Periwinkle vs Scaly-naped Parrot / Scaly-naped Amazon

Littorina littorea compared with Amazona mercenaria

Taxonomic Classification

Rank	Common Periwinkle	Scaly-naped Parrot / Scaly-naped Amazon
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Aves (Birds)
Order	Littorinimorpha (Littorinimorpha)	Psittaciformes (Parrots)
Family	Littorinidae	Psittacidae (True Parrots)
Genus	Littorina	Amazona
Species	Littorina littorea	Amazona mercenaria

Evolutionary Relationship

Common Periwinkle and Scaly-naped Parrot / Scaly-naped Amazon share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Common Periwinkle

LC — Least Concern

Scaly-naped Parrot / Scaly-naped Amazon

LC — Least Concern

Physical Characteristics

Attribute	Common Periwinkle	Scaly-naped Parrot / Scaly-naped Amazon
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (4 countries) and North America (Canada, United States).

Scaly-naped Parrot / Scaly-naped Amazon

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Common Periwinkle

Common Periwinkle (Littorina littorea) 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.

Scaly-naped Parrot / Scaly-naped Amazon

A large, predominantly green amazon parrot with distinctive dark-scaled nape feathers and a patch of red on the wing, scaly-naped amazons inhabit humid montane forests of the northern and central Andes in Colombia, Venezuela, Ecuador, and Peru at elevations of 600–3,000 meters. Relatively little known compared to other amazons, they are found in pairs or small flocks feeding on seeds, fruit, and flowers in cloud forest. Listed as Least Concern.