It's a snow day for Libby and Becca! That means making snow angels, sledding, and looking for animal tracks, which leads them to some hungry birds. Libby and Becca decide to help the birds. They build them a tree house to keep them warm and provide snacks so they won't be hungry. Aligned to Common Core standards and correlated to state standards. Calico Kid is an imprint of Magic Wagon, a division of ABDO. Translated by native Spanish speakers--and immersion school educators.