Chestnut-collared Longspur vs Red-billed Duck

Calcarius ornatus compared with Anas erythrorhyncha

Key Differences

• Chestnut-collared Longspur is Vulnerable while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Chestnut-collared Longspur	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Passeriformes (Songbirds)	Anseriformes (Anseriformes)
Family	Calcariidae	Anatidae
Genus	Calcarius	Anas
Species	Calcarius ornatus	Anas erythrorhyncha

Evolutionary Relationship

Chestnut-collared Longspur and Red-billed Duck share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Chestnut-collared Longspur

VU — Vulnerable

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Chestnut-collared Longspur	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut-collared Longspur

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-billed Duck

Habitat

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

Range

Found across Europe (6 countries) and South America (Ecuador).

Chestnut-collared Longspur

The Chestnut-collared Longspur (Calcarius ornatus) is a species in the genus Calcarius. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway