白头海雕 vs Common Toadskin Lichen

Haliaeetus leucocephalus compared with Lasallia papulosa

Taxonomic Classification

Rank	白头海雕	Common Toadskin Lichen
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Ascomycota (子囊菌门)
Class	Aves (鳥綱)	Lecanoromycetes (茶漬綱)
Order	Accipitriformes (鷹形目)	Umbilicariales (石耳目)
Family	Accipitridae (Hawks & Eagles)	Umbilicariaceae
Genus	Haliaeetus (Sea Eagles)	Lasallia
Species	Haliaeetus leucocephalus	Lasallia papulosa

Conservation Status

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Common Toadskin Lichen

NE — Not Evaluated

Physical Characteristics

Attribute	白头海雕	Common Toadskin Lichen
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 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).

Common Toadskin Lichen

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and United States.

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。

Common Toadskin Lichen

<em>Lasallia papulosa</em>, known as the common toadskin lichen, is a foliose lichen in the family Umbilicariaceae, belonging to the broader group of rock-dwelling umbilicate lichens. This species typically grows attached to exposed siliceous rock surfaces, particularly granite, quartzite, and other acidic rock outcrops in montane, boreal, and arctic environments across North America and parts of Europe and Asia. The thallus is typically olive-brown to dark gray in color, with a distinctively blistered or pustulate upper surface texture that gives the species its common name. It attaches to the substrate by a single central holdfast (the umbilicus), allowing the irregular, lobed thallus edges to lift freely. <em>Lasallia papulosa</em> is ecologically important as a pioneer species on bare rock, contributing to weathering processes and providing microhabitat and food for specialized invertebrates. It is sensitive to air pollution, particularly sulfur dioxide, and is often used as a bioindicator of air quality. The geographic range spans rocky regions of eastern North America, Scandinavia, the Alps, and parts of northern Asia. The species is currently assessed as Least Concern by the IUCN. Biological traits such as average growth rates, thallus dimensions, and biomass estimates remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇺🇸 United States