Brook Floater vs Buff-necked Ibis

Alasmidonta varicosa compared with Theristicus caudatus

Key Differences

• Brook Floater is Vulnerable while Buff-necked Ibis is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Buff-necked Ibis
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Aves (Birds)
Order	Unionida (Unionida)	Pelecaniformes (Pelecaniformes)
Family	Unionidae	Threskiornithidae
Genus	Alasmidonta	Theristicus
Species	Alasmidonta varicosa	Theristicus caudatus

Evolutionary Relationship

Brook Floater and Buff-necked Ibis share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Buff-necked Ibis

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Buff-necked Ibis
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Buff-necked Ibis

Habitat

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

Range

Found across Europe (5 countries) and South America (Colombia, Venezuela).

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

Buff-necked Ibis

Buff-necked Ibis (Theristicus caudatus) 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.