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Think Squirrels Are Social? This Solitary Giant Breaks Every Rule

Some see squirrels as adorable, bushy-tailed creatures that run in circles around tree trunks before they finally race up ...
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Geographical variation in squirrel mating calls and their recognition limits in the widely distributed species complex on JSTOR

Behavioral Ecology and Sociobiology, Vol. 75, No. 6 (June 2021), pp. 1-15 (15 pages) Acoustic signals are one of the reproductive isolation mechanisms that can be a driving force for speciation.