Alder Flycatcher vs Arizona Gray Squirrel

Empidonax alnorum compared with Sciurus arizonensis

Key Differences

• Alder Flycatcher is Least Concern while Arizona Gray Squirrel is Data Deficient.

Taxonomic Classification

Rank	Alder Flycatcher	Arizona Gray Squirrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Rodentia (Rodents)
Family	Tyrannidae	Sciuridae (Squirrels)
Genus	Empidonax	Sciurus (Tree Squirrels)
Species	Empidonax alnorum	Sciurus arizonensis

Evolutionary Relationship

Alder Flycatcher and Arizona Gray Squirrel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Alder Flycatcher

LC — Least Concern

Arizona Gray Squirrel

DD — Data Deficient

Physical Characteristics

Attribute	Alder Flycatcher	Arizona Gray Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder Flycatcher

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

Arizona Gray Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Alder Flycatcher

Alder Flycatcher (Empidonax alnorum) 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.

Arizona Gray Squirrel

The Arizona Gray Squirrel, Sciurus arizonensis, is a species. Its conservation status is listed as Data Deficient, meaning insufficient information exists to assess its risk of extinction. Typically found in diverse terrestrial and aquatic ecosystems.