ハシグロカッコウ vs ココスカッコウ

Coccyzus erythropthalmus compared with Coccyzus ferrugineus

Key Differences

• ハシグロカッコウ is Least Concern while ココスカッコウ is Vulnerable.

Taxonomic Classification

Rank	ハシグロカッコウ	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 same	Cuculiformes (カッコウ目)	Cuculiformes (カッコウ目)
Family same	Cuculidae	Cuculidae
Genus same	Coccyzus	Coccyzus
Species	Coccyzus erythropthalmus	Coccyzus ferrugineus

Evolutionary Relationship

ハシグロカッコウ and ココスカッコウ share a common ancestor at the Genus level: Coccyzus.

Conservation Status

ハシグロカッコウ

LC — Least Concern

ココスカッコウ

VU — Vulnerable

Physical Characteristics

Attribute	ハシグロカッコウ	ココスカッコウ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

ハシグロカッコウ

Habitat

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

Range

Widely distributed across Europe (Denmark, Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

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.

ハシグロカッコウ

クロハシカッコウ（Coccyzus erythropthalmus）は、IUCNレッドリストで軽度懸念（LC）に分類されています。分布域全体にわたって広く生息し個体数も豊富で、個体群は安定しており、差し迫った保全上の懸念はありません。

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