I know I'm sure this question has been asked a million times but we have 6 chickens outside in their coop and while they seem to be doing better in the cold then i am tomorrow is supposed to be pretty brutal. High of 2 low of -15 before windchill besides rubbing vaseline on their combs(was not fun yesterday is not going to be fun tonight) is there anything else i should do for my girls? Also how often should i reapply the vaseline? i did it once yesterday but by this morning it looked like it was gone not sure if they rubbed it off or if there was still enough to protect them. Please help my poor girls! PS: if it helps i got my chickies from a local hatchery and they are winter hardy breeds PPS: My girls are about 18 weeks old and not laying yet.