koala vs Ibis de Ridgway

Phascolarctos cinereus compared with Plegadis ridgwayi

Key Differences

koala is Vulnerable while Ibis de Ridgway is Least Concern.

Taxonomic Classification

Rank	koala	Ibis de Ridgway
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (mammifères)	Aves (oiseau)
Order	Diprotodontia (Marsupials)	Pelecaniformes (Pelecaniformes)
Family	Phascolarctidae (Koalas)	Threskiornithidae
Genus	Phascolarctos (Koalas)	Plegadis
Species	Phascolarctos cinereus	Plegadis ridgwayi

Evolutionary Relationship

koala and Ibis de Ridgway share a common ancestor at the Phylum level: Chordata. (Chordates)

Afficher Phylum: Chordata

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Ibis de Ridgway

LC — Least Concern

Physical Characteristics

Attribute	koala	Ibis de Ridgway
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.

Ibis de Ridgway

Habitat

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

Range

Found across Europe (5 countries) and South America (Ecuador).

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.

Ibis de Ridgway

Puna Ibis (Plegadis ridgwayi) 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.