Common Cuckoo vs European otter

Cuculus canorus compared with Lutra lutra

Key Differences

• Common Cuckoo is Near Threatened while European otter is Vulnerable.

Taxonomic Classification

Rank	Common Cuckoo	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Cuculiformes (Cuculiformes)	Carnivora (Carnivorans)
Family	Cuculidae	Mustelidae (Weasels & Otters)
Genus	Cuculus	Lutra (Otters)
Species	Cuculus canorus	Lutra lutra

Evolutionary Relationship

Common Cuckoo and European otter share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Cuckoo

NT — Near Threatened

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Common Cuckoo	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Common Cuckoo

Habitat

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

Range

Found across Europe (6 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Cuckoo

Common Cuckoo (Cuculus canorus) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden