Buff-collared Nightjar vs Rootless Duckweed

Antrostomus ridgwayi compared with Wolffia arrhiza

Key Differences

• Buff-collared Nightjar is Least Concern while Rootless Duckweed is Endangered.

Taxonomic Classification

Rank	Buff-collared Nightjar	Rootless Duckweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Liliopsida (Monocots)
Order	Caprimulgiformes (Caprimulgiformes)	Alismatales (Alismatales)
Family	Caprimulgidae	Araceae
Genus	Antrostomus	Wolffia
Species	Antrostomus ridgwayi	Wolffia arrhiza

Conservation Status

Buff-collared Nightjar

LC — Least Concern

Rootless Duckweed

EN — Endangered

Physical Characteristics

Attribute	Buff-collared Nightjar	Rootless Duckweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Buff-collared Nightjar

Habitat

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

Range

Found in Norway.

Rootless Duckweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (10 countries), North America (Canada), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Buff-collared Nightjar

The Buff-Collared Nightjar (Antrostomus ridgwayi) is a species in the genus Antrostomus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway