Ray's Knotgrass vs arrábio-de-bico-vermelho

Polygonum oxyspermum compared with Anas erythrorhyncha

Key Differences

• Ray's Knotgrass is Endangered while arrábio-de-bico-vermelho is Least Concern.

Taxonomic Classification

Rank	Ray's Knotgrass	arrábio-de-bico-vermelho
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (cordados)
Class	Magnoliopsida (Dicots)	Aves (ave)
Order	Caryophyllales (Caryophyllales)	Anseriformes (Anseriformes)
Family	Polygonaceae	Anatidae
Genus	Polygonum	Anas
Species	Polygonum oxyspermum	Anas erythrorhyncha

Conservation Status

Ray's Knotgrass

EN — Endangered

arrábio-de-bico-vermelho

LC — Least Concern

Physical Characteristics

Attribute	Ray's Knotgrass	arrábio-de-bico-vermelho
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

arrábio-de-bico-vermelho

Habitat

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

Range

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

arrábio-de-bico-vermelho

O pato-de-bico-vermelho (Anas erythrorhyncha) esta classificado como Menos Preocupante (LC) na Lista Vermelha da IUCN. Amplamente distribuido e abundante em sua area de ocorrencia, com populacoes estaveis e sem preocupacoes imediatas de conservacao.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway