koala vs Lord Derby's Parakeet

Phascolarctos cinereus compared with Psittacula derbiana

Key Differences

• koala is Vulnerable while Lord Derby's Parakeet is Near Threatened.

Taxonomic Classification

Rank	koala	Lord Derby's Parakeet
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Aves (นก)
Order	Diprotodontia (Marsupials)	Psittaciformes (อันดับนกแก้ว)
Family	Phascolarctidae (Koalas)	Psittacidae (True Parrots)
Genus	Phascolarctos (Koalas)	Psittacula
Species	Phascolarctos cinereus	Psittacula derbiana

Evolutionary Relationship

koala and Lord Derby's Parakeet share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Lord Derby's Parakeet

NT — Near Threatened

Physical Characteristics

Attribute	koala	Lord Derby's Parakeet
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Lord Derby's Parakeet

Habitat

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

Range

Found across Europe (6 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.

Lord Derby's Parakeet

One of the largest parakeets in the world, Lord Derby's parakeets display distinctive blue-green plumage with a striking red-and-black banded bill and a long pointed tail reaching over 60 cm. They inhabit montane forests at 1,000–4,000 meters elevation across the eastern Himalayas, southwest China, and northern Myanmar. Listed as Vulnerable due to deforestation and trapping, they are prized aviary birds. They are known to breed cooperatively with related pairs assisting dominant breeders.