My chickens are the same....one year I spread straw over the snow and they came out, but I didn't do it this year.This past week I took out a lawn bag full of fall leaves and spread it out on the snow in the chicken run. We had a few sunny days above 32F, and the chickens went outside for the first time since late November. My chickens will not walk on snow, so it's like a fence line for them. However, the leaves on top of the snow is just fine and they will stay outside walking on the leaves. It might not be spring yet, but leaves on the snow make my chickens think it's time to leave the coop and go outside.
Lol, I will try to find that video, but what are the chances. It's hard to tell what Leon actually said and why I heard it the way I did....