Estonian peasants believed that killing a fire red squirrel would cause one’s own hearth to go cold. In parts of rural Sweden, farmers would leave out small bowls of lingonberry jam in winter, hoping to lure the “fire-sprite squirrel” to their barns, believing it would protect stored grain from lightning strikes.
But here lies the crisis. Climate change has altered wildfire regimes. Fires now burn hotter, larger, and more frequently—often too fast for any animal to escape. In the catastrophic 2021 Siberian taiga fires, an estimated perished, including entire populations of fire reds. Unlike the more numerous common reds, fire red variants are already rare (perhaps 1 in 10,000 individuals). Their genetic niche is being erased. The Gray Invasion and the Fading Ember If fire is a threat, the eastern gray squirrel ( Sciurus carolinensis ) is an apocalypse. Introduced to Europe from North America, grays outcompete reds for food and carry squirrelpox virus—harmless to themselves but 90% fatal to reds. Fire reds, with their higher metabolism and smaller population pockets, are especially vulnerable. fire red squirrels
In the hushed, cathedral-like silence of an old-growth pine forest, a flash of rust and copper darts up a scaly trunk. For a moment, it pauses—chest heaving, tail twitching like a lit fuse. This is no ordinary squirrel. This is a fire red squirrel ( Sciurus vulgaris var. flavus ), a creature that seems to have borrowed its very palette from the flames that once shaped the land. Estonian peasants believed that killing a fire red
In Ireland and Scotland, conservationists have established “red squirrel strongholds”—islands of native woodland where grays are systematically excluded. Within these refuges, the fire red morph sometimes reappears after decades of absence, as if a long-dormant genetic switch were flicked on again. Dr. Emilia Voss, a geneticist at the University of Aberdeen, calls them “phantoms of the forest floor.” Climate change has altered wildfire regimes