my sisters chicken just died in seconds.. its -50 out and my rooster is hard feathered so we voted to bring all the chickens in so none of them would be cold. well we had her and one more chicken to bring in and i got her and i noticed she was like putting her head down like she was going to sleep but i thought she was trying to preen until i saw her eyes were shut. i rushed in the house and shook her (i dont know why i figured shake her to try to get her heart going or blood flowing or something) Its not a long trip from the coop to our door and she was doing fine in the coop. Well she flinched and then she was gone. It didnt even take a minute. Anyone know what could have happened to her? Our other chickens are fine, we dont know her age so it could have been cold shock since she could have been old, or heart attack. Please help me!! PS. my sister is ArmdChicken so if you know her..