Black Stem Rust vs Scarlet Macaw

Puccinia graminis compared with Ara macao

Key Differences

Black Stem Rust is Not Evaluated while Scarlet Macaw is Least Concern.

Taxonomic Classification

Rank	Black Stem Rust	Scarlet Macaw
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Pucciniomycetes (Pucciniomycetes)	Aves (Birds)
Order	Pucciniales (Pucciniales)	Psittaciformes (Parrots)
Family	Pucciniaceae	Psittacidae (True Parrots)
Genus	Puccinia	Ara (Macaws)
Species	Puccinia graminis	Ara macao

Conservation Status

Black Stem Rust

NE — Not Evaluated

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Black Stem Rust	Scarlet Macaw
Diet	—	Herbivore
Average Lifespan	—	50 years
Average Length	—	85 cm
Average Weight	—	1.0 kg

Habitat & Geographic Range

Black Stem Rust

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Peru).

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.

Black Stem Rust

The Black Stem Rust (Puccinia graminis) is a species in the genus Puccinia. Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

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.