Gray squirrels: Cute as beans, clever as crows. These ubiquitous furry little denizens of urban parks are easy to overlook. And to misunderstand. In our latest profile of urban wildlife species, we look here at the eastern gray squirrel (and yes, that’s gray with “A”). It’s squirrel parasols, shrinking testicles, color vision, devious deception, swimming squirrels, and mass migrations. Welcome to the Single Acorn Podcast.