Category: Birds fluff their feathers to trap body heat against their skin to stay warm when its cold

  • Fluffed Against The Cold

    January 27, 2026 Like most mornings recently it was mighty cold this morning. Actually it was 10° when I took this picture. This tan striped White-throated Sparrow (Zonotrichia albicollis) was fluffed up to keep warm while getting its breakfast of hulled sunflower seeds. By fluffing up their feathers, birds are creating trapped body heat against…