白头海雕 vs koala

Haliaeetus leucocephalus compared with Phascolarctos cinereus

Key Differences

• 白头海雕 is Not Evaluated while koala is Vulnerable.
• 白头海雕 is carnivore while koala is herbivore.
• koala is 2.0x heavier than 白头海雕.
• 白头海雕 lives longer (28 years vs 15 years).

Taxonomic Classification

Rank	白头海雕	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	Accipitriformes (鷹形目)	Diprotodontia (雙門齒目)
Family	Accipitridae (Hawks & Eagles)	Phascolarctidae (Koalas)
Genus	Haliaeetus (Sea Eagles)	Phascolarctos (Koalas)
Species	Haliaeetus leucocephalus	Phascolarctos cinereus

Evolutionary Relationship

白头海雕 and koala share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	白头海雕	koala
Diet	Carnivore	Herbivore
Average Lifespan	28 years	15 years
Average Length	90 cm	75 cm
Average Weight	5.0 kg	10.0 kg

Habitat & Geographic Range

白头海雕

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

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.

白头海雕

白头海雕是美国国鸟，也是美国生态保护史上的成功案例，曾因滴滴涕（DDT）的广泛使用而濒临灭绝，经保护措施的实施后种群数量已显著恢复。该物种在IUCN红色名录中被评估为无危（LC），以白色头颈和尾羽与深棕色体羽形成的鲜明对比为主要识别特征。它们主要以鱼类为食，也会捕食哺乳动物和腐肉。

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。