They stay frozen for about 6 hours. I put them in their run about 8 am, before I go to work. I also put one in their coop and it still had ice in it when I got home at 4:30. If you are at home, you could switch the bottles out. They love to sit next to them and on them to cool off.How long do the frozen bottles stay frozen?
Mama Hen Gretchen and the babes getting ready for "bed" tonight,
The Lil Chick Inn nursery/brooder. The big girls have plenty of shade underneath.