It is cold outside. The wind is blowing; the snow is flying. At this moment, Weather Underground lists the temperature in my hometown as 13 degrees. It feels like 0 degrees. I was sitting in my home office, watching several starlings as they ate suet nuggets at our bird feeder.
I sure wouldn’t want to be outside today. I wondered how birds keep warm in winter. The answer was a quick Internet search away — How Do Birds Keep Warm in Winter.