.blairsmenagerie's Animal Corner - Birds' blood functions as heating system in winter: https://t.co/46w0jT8NjC. And please be sure to click "Like" and the big, red "Subscribe" button while you're there. #BlairsAnimalCorner https://t.co/hqWuWKztfU.blairsmenagerie's Animal Corner - Birds' blood functions 3721521 .blairsmenagerie's Animal Corner - Birds' blood functions as heating system in winter: https://t.co/46w0jT8NjC. And please be sure to click "Like" and the big, red