Black-billed Parrot / Black-billed Amazon vs Coastal Silver-stiletto

Amazona agilis compared with Acrosathe annulata

Key Differences

• Black-billed Parrot / Black-billed Amazon is Endangered while Coastal Silver-stiletto is Least Concern.

Taxonomic Classification

Rank	Black-billed Parrot / Black-billed Amazon	Coastal Silver-stiletto
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Psittaciformes (Parrots)	Diptera (Diptera)
Family	Psittacidae (True Parrots)	Therevidae
Genus	Amazona	Acrosathe
Species	Amazona agilis	Acrosathe annulata

Evolutionary Relationship

Black-billed Parrot / Black-billed Amazon and Coastal Silver-stiletto share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black-billed Parrot / Black-billed Amazon

EN — Endangered

Coastal Silver-stiletto

LC — Least Concern

Physical Characteristics

Attribute	Black-billed Parrot / Black-billed Amazon	Coastal Silver-stiletto
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-billed Parrot / Black-billed Amazon

Habitat

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

Range

Found in Norway. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Coastal Silver-stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Black-billed Parrot / Black-billed Amazon

The Black-billed Parrot / Black-billed Amazon (Amazona agilis) is a species in the genus Amazona. It is currently classified as Endangered on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Coastal Silver-stiletto

Coastal silver stiletto (Acrosathe annulata) is a slender robber fly in the family Therevidae, native to northwestern Europe, including the United Kingdom, France, the Netherlands, Belgium, and Scandinavia. Adults are found on coastal sand dunes and sandy heathland, where they perch on bare sand to ambush small flying insects. Stiletto flies in the family Therevidae are characterised by a slender body, long pointed abdomen, and predatory habits; adults prey on a variety of small dipterans and other flying insects during warm, sunny periods. Larvae develop in sandy soil, where they are also predatory, feeding on other invertebrate larvae. Acrosathe annulata is a habitat specialist restricted to open, sandy coastal habitats with sparse vegetation—environments that have declined substantially across northwestern Europe due to dune stabilisation, recreational disturbance, and the cessation of traditional dune management. The IUCN lists it as Least Concern, though regional conservation bodies in the United Kingdom have flagged population declines. It is considered an indicator of high-quality coastal sand dune habitats and is monitored through national invertebrate surveys.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway