The Ermine, or Short-tailed Weasel, turns from brown to snow-white in winter while retaining its distinctive black-tipped tail year-round. This seasonal color change provides camouflage in snowy environments and is triggered by changing day length rather than temperature. Despite its small size, the ermine is a fierce predator capable of killing prey several times its own mass.
Best time to see a Ermine
The best time to see a Ermine is June–September, when about 68% of U.S. sightings happen, based on 180 research-grade iNaturalist observations.
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