Laysan Duck vs Silk-Button Spangle Gall

Anas laysanensis compared with Neuroterus numismalis

Key Differences

• Laysan Duck is Critically Endangered while Silk-Button Spangle Gall is Not Evaluated.

Taxonomic Classification

Rank	Laysan Duck	Silk-Button Spangle Gall
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Anseriformes (Anseriformes)	Hymenoptera (Ants, Bees & Wasps)
Family	Anatidae	Cynipidae
Genus	Anas	Neuroterus
Species	Anas laysanensis	Neuroterus numismalis

Evolutionary Relationship

Laysan Duck and Silk-Button Spangle Gall share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Laysan Duck

CR — Critically Endangered

Silk-Button Spangle Gall

NE — Not Evaluated

Physical Characteristics

Attribute	Laysan Duck	Silk-Button Spangle Gall
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, France, Netherlands, Norway, and United Kingdom. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Silk-Button Spangle Gall

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Laysan Duck

Laysan Duck (Anas laysanensis) 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.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway