牛背鷺〔西方黃頭鷺〕 vs koala

Bubulcus ibis compared with Phascolarctos cinereus

Key Differences

• 牛背鷺〔西方黃頭鷺〕 is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	牛背鷺〔西方黃頭鷺〕	koala
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Aves (鳥綱)	Mammalia (哺乳動物)
Order	Pelecaniformes (鹈形目)	Diprotodontia (雙門齒目)
Family	Ardeidae	Phascolarctidae (Koalas)
Genus	Bubulcus	Phascolarctos (Koalas)
Species	Bubulcus ibis	Phascolarctos cinereus

Evolutionary Relationship

牛背鷺〔西方黃頭鷺〕 and koala share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

牛背鷺〔西方黃頭鷺〕

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	牛背鷺〔西方黃頭鷺〕	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

牛背鷺〔西方黃頭鷺〕

Habitat

Found across multiple habitat types including deserts and xeric shrublands, tropical and subtropical moist broadleaf forests, and tropical and subtropical dry broadleaf forests, among 5 distinct biome types spanning the Palearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Egypt), Asia (Georgia, India), Europe (8 countries), North America (6 countries), and South America (7 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.

牛背鷺〔西方黃頭鷺〕

牛背鹭（Bubulcus ibis）在IUCN红色名录中被列为无危（LC）。分布广泛，种群数量稳定，无直接保护威胁。

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。