“allen's”

The following 2 entries include the term allen's.

Allen's hummingbird

noun

: a hummingbird (Selasphorus sasin) of western North America, the male being metallic green above with bright red throat and whitish breast, the female being variably marked with reddish brown, gray, and white

Allen's rule

noun

: a statement in zoology: protruding body parts (as ears, tail, legs, bill) of warm-blooded animals are relatively shorter in cooler than in warmer parts of the range


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