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4 ways birds keep warm in the winter. 1. The feathers trap air which is warmed by the bird and keeps it warm. 2. More complicated: repeated backscattering of infrared light between radiative shields ( an edited excerpt from this article)...

Hi, I often have read that a dark bird might do better in a cold climate, supposedly because the black will gather heat from the environment. There is a reason the artic fox and other birds and fauna from the Arctic wear white in winter. Here's a great explanation. The 1st 2 sections...