クビワヨタカ vs ココスカッコウ

Antrostomus ridgwayi compared with Coccyzus ferrugineus

Key Differences

• クビワヨタカ is Least Concern while ココスカッコウ is Vulnerable.

Taxonomic Classification

Rank	クビワヨタカ	ココスカッコウ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Aves (鳥類)	Aves (鳥類)
Order	Caprimulgiformes (ヨタカ目)	Cuculiformes (カッコウ目)
Family	Caprimulgidae	Cuculidae
Genus	Antrostomus	Coccyzus
Species	Antrostomus ridgwayi	Coccyzus ferrugineus

Evolutionary Relationship

クビワヨタカ and ココスカッコウ share a common ancestor at the Class level: Aves. (鳥類)

Conservation Status

クビワヨタカ

LC — Least Concern

ココスカッコウ

VU — Vulnerable

Physical Characteristics

Attribute	クビワヨタカ	ココスカッコウ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

クビワヨタカ

Habitat

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

Range

Found in Norway.

ココスカッコウ

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.

クビワヨタカ

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.

ココスカッコウ

The Cocos Cuckoo (Coccyzus ferrugineus) is a medium-sized bird in the family Cuculidae, endemic to Cocos Island, a remote volcanic island in the eastern Pacific Ocean approximately 550 kilometres southwest of the Costa Rican coast. This island-restricted species is closely related to mainland cuckoos in the genus Coccyzus and represents a classic example of insular endemism. Adults display rufous-brown upperparts, a pale buffy underside, and a moderately long tail with white tail-tip spots on the dark outer feathers. The species inhabits the dense tropical forest that covers much of Cocos Island, foraging in the mid-canopy for caterpillars, insects, and small lizards. As with other cuckoos, Cocos Cuckoos are often cryptic and detected more readily by their calls than by direct observation. The species is classified as Vulnerable by the IUCN due to its severely restricted range on a single island of approximately 24 square kilometres, making any localised disturbance potentially significant. Threats include introduced mammals—particularly feral pigs and cats—that degrade forest structure and prey on nesting birds. Cocos Island is a protected national park and UNESCO World Heritage Site, offering some measure of safeguard, but continued monitoring of invasive species management is essential. Population estimates remain uncertain, but the bird appears to be a common resident within the island's forested interior.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway