Cinnabar Oysterling vs Scarlet Macaw

Crepidotus cinnabarinus compared with Ara macao

Key Differences

Cinnabar Oysterling is Vulnerable while Scarlet Macaw is Least Concern.

Taxonomic Classification

Rank	Cinnabar Oysterling	Scarlet Macaw
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Aves (Birds)
Order	Agaricales (Gilled Mushrooms)	Psittaciformes (Parrots)
Family	Crepidotaceae	Psittacidae (True Parrots)
Genus	Crepidotus	Ara (Macaws)
Species	Crepidotus cinnabarinus	Ara macao

Conservation Status

Cinnabar Oysterling

VU — Vulnerable

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cinnabar Oysterling	Scarlet Macaw
Diet	—	Herbivore
Average Lifespan	—	50 years
Average Length	—	85 cm
Average Weight	—	1.0 kg

Habitat & Geographic Range

Cinnabar Oysterling

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Scarlet Macaw

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found across Europe (5 countries) and South America (Colombia, Ecuador, Venezuela). Population trends indicate a declining trajectory in parts of its range.

Cinnabar Oysterling

Cinnabar oysterling (Crepidotus cinnabarinus) is a brightly colored bracket fungus in the family Crepidotaceae, found in Europe and North America, typically on dead deciduous wood including fallen logs, branches, and stumps in humid woodland settings. It is one of the more visually distinctive members of the genus, with vivid orange-red to cinnabar-red fruiting bodies—far more colorful than most Crepidotus species, which are typically pale and inconspicuous. The fruiting bodies are small, fan-shaped to kidney-shaped caps with a lateral attachment to the substrate, white gills that become pinkish-brown as spores mature, and no stalk. Crepidotus cinnabarinus is classified as Vulnerable, reflecting population declines associated with the loss of dead wood habitat in managed forests across Europe and parts of North America. Saproxylic fungi of this type depend on old-growth or mature woodland conditions with abundant coarse woody debris. Intensive forest management that removes deadwood and fallen logs significantly reduces habitat quality. The species is found in old-growth deciduous forest remnants and is an indicator of high conservation value woodland. Conservation measures include the retention of deadwood during forestry operations and the protection of ancient and veteran trees. Its striking coloration makes it a memorable indicator species for woodland ecologists.

Scarlet Macaw

One of the most brilliantly colored birds in the Americas, scarlet macaws display vivid red, yellow, and blue plumage with wingspans reaching 1 meter. Found in humid lowland forests from Mexico to Bolivia, they are highly intelligent, long-lived — up to 75 years — and form lifelong pair bonds. They travel long distances to clay licks where they consume mineral-rich soil to detoxify seeds. Listed as Least Concern but locally threatened by habitat loss and the pet trade.