Collared Towhee vs Common Silver Hairgrass

Pipilo ocai compared with Aira caryophyllea

Key Differences

• Collared Towhee is Least Concern while Common Silver Hairgrass is Endangered.

Taxonomic Classification

Rank	Collared Towhee	Common Silver Hairgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Liliopsida (Monocots)
Order	Passeriformes (Songbirds)	Poales (Grasses)
Family	Passerellidae	Poaceae (Grass Family)
Genus	Pipilo	Aira
Species	Pipilo ocai	Aira caryophyllea

Conservation Status

Collared Towhee

LC — Least Concern

Common Silver Hairgrass

EN — Endangered

Physical Characteristics

Attribute	Collared Towhee	Common Silver Hairgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Collared Towhee

Habitat

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

Range

Found in Norway.

Common Silver Hairgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cameroon), Asia (Japan, South Korea), Europe (6 countries), North America (4 countries), Oceania and the Pacific (Australia), and South America (4 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Collared Towhee

The Collared Towhee, known scientifically as <em>Pipilo ocai</em>, is a passerine bird belonging to the family Passerellidae, the New World sparrows. <em>Pipilo ocai</em> is characterised by its striking plumage, which typically features black upperparts, a rufous-tinged collar, and a contrasting pale underside. Towhees are generally ground-foraging birds, using a characteristic double-scratch technique to disturb leaf litter and expose seeds and invertebrates. The Collared Towhee is typically associated with montane and highland forest habitats, particularly brushy undergrowth and forest edges at higher elevations. It is reported to occur in Norway according to available range data. Detailed biological traits including typical lifespan, body length, and weight are poorly documented for this species in available literature. The Collared Towhee is currently assessed as Least Concern on the IUCN Red List.

Common Silver Hairgrass

<em>Aira caryophyllea</em>, commonly known as Common Silver Hairgrass, is a slender annual grass belonging to the family Poaceae within the order Poales. This delicate grass is currently classified as Endangered on the IUCN Red List, reflecting significant conservation concern despite its historically broad distribution. It is typically found across a remarkable diversity of biome types, including tropical and subtropical moist broadleaf forests, grasslands, savannas, and flooded habitats, demonstrating notable ecological versatility. Its geographic range spans multiple continents, with documented populations in Africa (Cameroon), Asia (Japan, South Korea), Europe, North America, Australia, and South America. As an annual grass, it completes its life cycle within a single growing season, reproducing via wind-dispersed seeds. The inflorescence typically bears silvery, shimmering spikelets that give the species its common name. Biological traits such as average lifespan, body dimensions, and dietary specifics follow typical patterns for annual grasses — drawing nutrients from soil through root absorption rather than consuming other organisms. The endangered status suggests populations may be declining due to habitat loss, land-use change, or invasive species pressure across parts of its range.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway