Hahnenschwanztyrann vs Hoffmann-Zweifinger-Faultier

Alectrurus tricolor compared with Choloepus hoffmanni

Key Differences

• Hahnenschwanztyrann is Vulnerable while Hoffmann-Zweifinger-Faultier is Least Concern.

Taxonomic Classification

Rank	Hahnenschwanztyrann	Hoffmann-Zweifinger-Faultier
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Aves (Vögel)	Mammalia (Säugetiere)
Order	Passeriformes (Sperlingsvögel)	Pilosa (Zahnarme)
Family	Tyrannidae	Megalonychidae
Genus	Alectrurus	Choloepus
Species	Alectrurus tricolor	Choloepus hoffmanni

Evolutionary Relationship

Hahnenschwanztyrann and Hoffmann-Zweifinger-Faultier share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Hahnenschwanztyrann

VU — Vulnerable

Hoffmann-Zweifinger-Faultier

LC — Least Concern

Physical Characteristics

Attribute	Hahnenschwanztyrann	Hoffmann-Zweifinger-Faultier
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hahnenschwanztyrann

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.

Hoffmann-Zweifinger-Faultier

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Hahnenschwanztyrann

The cock-tailed tyrant (Alectrurus tricolor) is a striking and unusual flycatcher in the family Tyrannidae, named for the remarkable elongated, spatula-shaped outer tail feathers of the male, which can exceed the body length and are displayed during aerial courtship flights over open grasslands. The species inhabits wet and seasonally flooded grasslands, cerrado savanna, and campos in the interior of South America, including central Brazil, eastern Bolivia, Paraguay, and northeastern Argentina — not Norway, as erroneous database entries suggest. Males combine conspicuous black, white, and rufous plumage with their extraordinary tail streamers in an elaborate display to attract females on leks; females are cryptically streaked brown. The cock-tailed tyrant is a ground- and low-vegetation forager, preying on insects and other small invertebrates gleaned from grass stems and caught in aerial sallies. The species is classified as Vulnerable by the IUCN due to extensive and continuing conversion and degradation of its native Neotropical grassland habitat through intensive soy and sugarcane agriculture, cattle ranching, fire management changes, and drainage of seasonally flooded grasslands. Populations have declined significantly across much of its range, particularly in Brazil and Paraguay. The species is a flagship for threatened grassland conservation in South America, where relatively little protection has historically been directed at open-country habitats compared to forest ecosystems.