Scarlet Macaw vs Willow Warbler

Ara macao compared with Phylloscopus trochilus

Key Differences

• Scarlet Macaw is Least Concern while Willow Warbler is Vulnerable.

Taxonomic Classification

Rank	Scarlet Macaw	Willow Warbler
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Psittaciformes (Parrots)	Passeriformes (Songbirds)
Family	Psittacidae (True Parrots)	Phylloscopidae
Genus	Ara (Macaws)	Phylloscopus
Species	Ara macao	Phylloscopus trochilus

Evolutionary Relationship

Scarlet Macaw and Willow Warbler share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Scarlet Macaw

LC — Least Concern

Population: ~50.0K

Trend: Decreasing ↓

Willow Warbler

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic 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.

Willow Warbler

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Willow Warbler

Willow Warbler (Phylloscopus trochilus) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway