How Wildlife Endures the Deep Freeze of February

Field report

A rare owl irruption lights up the cold, and frozen marshlands continue to reveal surprising signs of life.

Hello there nature lovers, and welcome to February! Besides an unusual wave of snowy owls pushing south, it's yet another quiet month of subtle natural highlights to get excited over. That said, the bitter cold gives way to some of the most vivid winter wildlife viewing of the year, so keep an ear out for bird calls through bare branches and make some time to get out and look around!

A Snowy Owl Irruption Brightens the Darkest Days (Feb. 2)

Alessandro Bianconi / CC BY 2.0 /Wikipedia

The snowy owl, that ghostly hunter of the Arctic tundra, may appear in surprising numbers this month as an irruption year pushes birds far south of their normal range. Triggered by crashes in lemming populations up north, these striking white raptors — with catlike yellow eyes and wingspan stretching five feet — wander into open fields and frozen lakeshores searching for voles and rabbits. Unlike most owls, they hunt in daylight, making February's short days ideal for spotting one perched on a fencepost or gliding low over snow-covered grassland. For those in the northern states, scan flat, treeless landscapes at dawn. Should deep snow make trekking difficult, many wildlife refuges host guided owl-watching walks through the month.

Stay Warm Under a Blanket of Fresh Snow (Feb. 5)

The deep snowpack that arrives with February's heaviest storms, blanketing the landscape in white, is more than just a pretty scene — it's a literal blanket for the creatures beneath. Mice, voles, and shrews build elaborate tunnel systems in the insulating space between soil and snow, where temperatures hover around freezing even when the air above drops well below zero. Subnivean zones, as scientists call them, are bustling winter cities of tiny mammals foraging on seeds and roots, largely hidden from hawks and foxes. If you're someone who enjoys snowshoeing, the days surrounding a big February snowfall should offer chances to spot the ventilation holes these little engineers poke through the crust.

Why This Matters to Treehugger

Winter ecology is our planet's quietest season and its struggles help us appreciate the resilience of nature. Understanding how animals survive the cold can also teach us about the delicate balance of ecosystems under stress.

The Frozen World Wakes Up After Thaw (Feb. 20)

NASA, ESA and the Hubble Heritage Team (STScI/AURA)

February's late-month thaw, when daytime temperatures finally creep above freezing and meltwater begins trickling through ice-cracked soil, will provide the best excuse yet to witness how the frozen world stirs back to life. Under the thinning ice of woodland ponds, wood frog embryos — frozen solid since December — begin to thaw and resume development. Spotted salamanders, tucked into burrows beneath the leaf litter, sense the groundwater seeping in and start their ancient migration toward vernal pools. Need a target? Pull on rubber boots and visit a forest pool at dusk. The first warm rain of late February triggers an amphibian pilgrimage you can hear from the parking lot — a chorus of spring peepers and wood frogs calling across the dark water.

Red Foxes and Coyotes Pair Up for Mating Season (Feb. 28)

In the waning days of February, red foxes and coyotes begin their mating rituals — a lively dance of yips, barks, and scent-marking that echoes across frozen meadows at twilight. By month's end, you might catch a pair of foxes trotting together along a tree line, the vixen's sharp bark answered by the dog fox's higher yip, as they establish the den site where pups will be born in early spring. Seek out open fields bordered by woods around dusk, and listen carefully — the chorus of coyotes singing to one another across the valley is one of winter's most stirring sounds.

Signs of Spring Migration Begin in the South (Late Feb.)

For our friends in the Southern states, late February marks the first whisper of spring migration as red-winged blackbirds return to cattail marshes and tree swallows appear over open water. The ideal times to catch this seasonal shift are at dawn when the first arrivals are feeding most actively. These early migrants generally keep pushing north through April. Best viewing conditions for migratory waterfowl in the Northern states are typically from mid-March until mid-May.