Not all birds fly south for the winter. The ones that stay up north face a tough few months once the weather gets colder. Most of their natural food supply has been exhausted, and insects have died or gone into hibernation. As we’ve said before, birds are beneficial animals, helping pollinate our flowers and feeding on potentially harmful insects. And backyard birds rely on us to help them get through the winter. You see a birdfeeder in your yard, they see a port in a storm. With that in mind, here are a few types of birdseed New Jersey birds will enjoy feasting on this winter.