I just went out to check on my girls. I found them in the shade, lying on their sides at funny angles. Is this normal? They were slow to get up and one kept her leg tucked up...like it had fallen asleep. I hurried inside and got a frozen milk jug out to them. I covered in in straw, which they promptly scratched away. I'm a new chicken momma (been doing this for 3 mos.) and am still getting used to my girls and their funny ways. Help me understand chicken. Thnx.