Advertisement

Photo: Fluffy goldfinch shines on a branch

124 of 1497

Our photo of the day comes from Eagles Mere, Pennsylvania.

Excuse us while we coo over this little ball of golden fluff, photographed so beautifully by Richard Liebert. But while we swoon, the goldfinch is just taking care of winter business – staying warm. As Audubon explains, smaller birds puff up into the shape of a little round beach ball to minimize heat loss. They bulk up in other ways as well: "Birds can also put on fat as both an insulator and energy source: More than 10 percent of winter body weight may be fat in certain species, including chickadees and finches. As a result, some birds spend the vast majority of their daylight hours seeking fatty food sources." #same

Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on Flickr and add your pictures to the group.

124 of 1497

More Slideshows