Eggshell Rock Blaze vs Laysan Duck

Phlyctis petraea compared with Anas laysanensis

Key Differences

• Eggshell Rock Blaze is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Eggshell Rock Blaze	Laysan Duck
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Aves (Birds)
Order	Ostropales (Ostropales)	Anseriformes (Anseriformes)
Family	Phlyctidaceae	Anatidae
Genus	Phlyctis	Anas
Species	Phlyctis petraea	Anas laysanensis

Conservation Status

Eggshell Rock Blaze

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Eggshell Rock Blaze	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Eggshell Rock Blaze

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States.

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.

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.