High energy food help birds keep warm in freezing weather
Don’t be fooled by fat, fluffy-looking garden birds in this spell of bitterly-cold weather – food from you could be the difference between life and death.
They generally look like that because they fluff they feathers out to trap heat in an effort to keep warm.
As ‘the Beast from the East’ has struck so late in winter, there are not many natural resources (ie, berries) for birds to feed on.
The further they have to go to forage, the more energy they burn up – likewise the colder it is the more fat stores they have to burn to keep warm.