Birch Blackhead vs Laysan Duck

Diatrypella favacea compared with Anas laysanensis

Key Differences

Birch Blackhead is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Birch Blackhead	Laysan Duck
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Sordariomycetes (Sordariomycetes)	Aves (Birds)
Order	Xylariales (Xylariales)	Anseriformes (Anseriformes)
Family	Diatrypaceae	Anatidae
Genus	Diatrypella	Anas
Species	Diatrypella favacea	Anas laysanensis

Conservation Status

Birch Blackhead

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Birch Blackhead	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Birch Blackhead

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden.

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.

Birch Blackhead

The Birch Blackhead (Diatrypella favacea) is a species in the genus Diatrypella. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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.