In many parts of the country, winter temperatures will soon drop to dangerous levels. Wind chills of less than 30 below zero are not uncommon in the north. Many animals that are vital to our ecosystems have fewer places to take refuge during the bitter winter months due to loss of habit from urban sprawl. So, to the extent that we are able, why not compensate for that habitat loss by building makeshift shelters and providing food and water that will attract wildlife and help preserve nature's balance? It's easier than you may think.