Black-rumped Waxbill vs koala

Estrilda troglodytes compared with Phascolarctos cinereus

Key Differences

• Black-rumped Waxbill is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Black-rumped Waxbill	koala
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Aves (นก)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Passeriformes (นกเกาะคอน)	Diprotodontia (Marsupials)
Family	Estrildidae	Phascolarctidae (Koalas)
Genus	Estrilda	Phascolarctos (Koalas)
Species	Estrilda troglodytes	Phascolarctos cinereus

Evolutionary Relationship

Black-rumped Waxbill and koala share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Black-rumped Waxbill

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Black-rumped Waxbill	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Black-rumped Waxbill

Habitat

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

Range

Found across Asia (Japan) and Europe (8 countries).

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.

Black-rumped Waxbill

A small waxbill of semi-arid and dry scrubland habitats across sub-Saharan Africa and the Sahel zone, black-rumped waxbills have a distinctive crimson bill and rump that contrasts with their grey-brown body. They inhabit dry grasslands, savanna borders, and cultivated areas, feeding on small grass seeds. Though small and inconspicuous, they are a popular aviary bird kept throughout Europe and Asia for their delicate appearance and active, social behavior.

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.