There is no clear evidence that snowy owls change color in winter.
Snowy owls have light coloration that provides camouflage when they are perched on snow, but this advantage is lost in summer
. Male snowy owls are barred with dark brown when they are young and get whiter as they get older, while females keep some dark markings throughout their lives. However, it is not clear whether snowy owls change color with the seasons.
- How Do Owls Adapt To Changing Seasons And Why Do Some Species Change Color In Winter?
- Are There Specific Owl Species That Undergo A Noticeable Change In Color During The Winter Months?
- What Are The Advantages Of Owls Changing Their Color In Winter, And How Does This Adaptation Benefit Them In Terms Of Survival And Hunting?
- Helpful Resources
How Do Owls Adapt To Changing Seasons And Why Do Some Species Change Color In Winter?
Owls have various adaptations that help them survive and adapt to changing seasons.
Here are some ways owls adapt to changing seasons:
- Feather Colors: The colors of an owl’s feathers help it blend in with its natural environment and provide camouflage.
For example, Snowy Owls have white feathers that help them hide in their snowy habitat, while Flammulated Owls have dark feathers that help them blend in when tucked against a tree.
Grassland species have light brown feathers to match the tan grasses and brown earth.
- Concealment Posture: Many owls have feathered legs and feet to provide warmth.
Snowy Owls, which live in cold Arctic climates, have heavily feathered legs and feet, while owls in warm southern climates, like Elf Owls, have lightly feathered legs and feet.
- Behavioral Adaptations: Owls adapt to changes in weather conditions by finding food and shelter to survive the colder months.
Some non-migratory owls may become less active during colder months and spend more time roosting.
They use their thick feather coverings and other adaptation techniques to help them survive or overcome the colder weather.
As for why some owl species change color in winter, it is believed to be an evolutionary adaptation for survival.
The switch to winter whites provides camouflage in snowy environments, making it easier for owls to blend in and hunt without being detected by prey or predators.
While camouflage is one factor, the exact reasons for the color change are not entirely clear.
It is likely that the switch to winter colors confers other advantages as well.
Are There Specific Owl Species That Undergo A Noticeable Change In Color During The Winter Months?
Yes, there are specific owl species that undergo a noticeable change in color during the winter months.
The snowy owl is mostly white, which provides camouflage when the owls are perched on snow.
However, this advantage is lost in summer, and as spring approaches, the light coloration of snowy owls becomes less effective for camouflage.
In contrast, brown tawny owl populations are growing in Eurasia as winters have become milder, and snow cover has decreased.
During harsh winters that blanket the ground with snow, gray tawny owls fare better, possibly because brown tawny owls are more visible to predators.
Selection on coloration due to changes in winter snow conditions has been found in color polymorphic tawny owls.
What Are The Advantages Of Owls Changing Their Color In Winter, And How Does This Adaptation Benefit Them In Terms Of Survival And Hunting?
Owls changing their color in winter has several advantages that benefit their survival and hunting.
Here are some of the advantages and benefits:
- Increased Crypsis: Gray tawny owls are more cryptic than brown tawny owls in snowy landscapes, which means they are better camouflaged and harder to spot by predators or prey.
- Improved Survival: During harsh winters that blanket the ground with snow, gray tawny owls fare better, possibly because brown tawny owls are more visible to predators.
As winters have become milder, snow cover has decreased, and brown tawny owl populations have increased.
“Its survival has improved as winters have become warmer,”.
- Climate-Driven Selection: Climate-driven selection has led to an evolutionary change in the population, where brown tawny owl populations are growing as the climate changes.
Using data spanning 28 years, scientists have found a dramatic increase of dark brown Tawny Owls in a population that also is usually dominated by pale gray owls.
This is the first evidence for a population actually evolving—selecting for an inherited trait—in response to climate change.
- Better Camouflage: Scientists think that the coloring provides better camouflage in snow-covered landscapes than the brown, which is better suited for warmer climates.