Bitter Tooth vs Scarlet Macaw

Hydnellum scabrosum compared with Ara macao

Key Differences

Bitter Tooth is Near Threatened while Scarlet Macaw is Least Concern.

Taxonomic Classification

Rank	Bitter Tooth	Scarlet Macaw
Kingdom	Fungi (เห็ดรา)	Animalia (สัตว์)
Phylum	Basidiomycota (Club Fungi)	Chordata (สัตว์มีแกนสันหลัง)
Class	Agaricomycetes (Mushrooms)	Aves (นก)
Order	Thelephorales (Thelephorales)	Psittaciformes (อันดับนกแก้ว)
Family	Bankeraceae	Psittacidae (True Parrots)
Genus	Hydnellum	Ara (Macaws)
Species	Hydnellum scabrosum	Ara macao

Conservation Status

Bitter Tooth

NT — Near Threatened

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Bitter Tooth

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Bitter Tooth

The Bitter Tooth (Hydnellum scabrosum) is a species in the genus Hydnellum. It is currently classified as Near Threatened on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

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.