Buff-necked Ibis vs koala

Theristicus caudatus compared with Phascolarctos cinereus

Key Differences

Buff-necked Ibis is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Buff-necked Ibis	koala
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Aves (kuş)	Mammalia (memeliler)
Order	Pelecaniformes (Pelikanlar)	Diprotodontia (İki ön dişliler)
Family	Threskiornithidae	Phascolarctidae (Koalas)
Genus	Theristicus	Phascolarctos (Koalas)
Species	Theristicus caudatus	Phascolarctos cinereus

Evolutionary Relationship

Buff-necked Ibis and koala share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Göster Phylum: Chordata

Conservation Status

Buff-necked Ibis

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Buff-necked Ibis	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Buff-necked Ibis

Habitat

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

Range

Found across Europe (5 countries) and South America (Colombia, Venezuela).

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.

Buff-necked Ibis

Buff-necked Ibis (Theristicus caudatus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

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.