Tweety, It’s Cold Outside ( NewsUSA ) – Wintertime. Love it or hate it, it arrives every year. Some of us dread the cold, some of us revel in it. While a lot of us head toward the equator, many of us ‘hibernate’ by hunkering down at home, protected from the elements. We stay warm in winter by layering clothing, wearing socks and hats, adding layers of blankets to bedding, blocking drafts and even baking which helps warm the house without touching the thermostat.Coping with the cold, dark days of winter can be challenging for humans and it’s also a trial for birds. Our feathered friends have evolved in some ingenious ways to cope with wintry weather.Some species migrate to warmer places, some flock together to share their warmth and if they stay put, many have developed some unique physical characteristics that protect and defend them from the cold.So how do wild birds stay warm in winter? They’ve adapted physically: many grow extra feathers or shed all their plumage (called molting) a...