Necklaced Spinetail vs Red-billed Duck

Synallaxis stictothorax compared with Anas erythrorhyncha

Taxonomic Classification

Rank	Necklaced Spinetail	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	Furnariidae	Anatidae
Genus	Synallaxis	Anas
Species	Synallaxis stictothorax	Anas erythrorhyncha

Evolutionary Relationship

Necklaced Spinetail and Red-billed Duck share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Necklaced Spinetail

LC — Least Concern

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Necklaced Spinetail	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Necklaced Spinetail

Habitat

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

Range

Distributed across Ecuador and Norway.

Red-billed Duck

Habitat

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

Range

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

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 2 countries:

🇪🇨 Ecuador 🇳🇴 Norway