Last winter, my flock had no issues with going out to roam the property, snow on the ground or no. If it was windy or actively snowing, they were not so keen. But any other time, and they were out and about. Over the summer I hatched new birds and sold off some others. I have a few of the birds I had last winter, but mostly new ones. With this group, you'd think the snowy ground was acid or lava. They will NOT willingly go out. I've taken to scattering some black oil sun flower seeds for them. They'll run out of the coop quickly, eat up their seeds, and run back in. The older group will do a bit of free ranging, but not much. The young ones hop or fly over patches of snow to get to clear areas. What is so different about this group? They are the same breeds. The old ones were all brooder raised. These are all hen raised. I'd think they'd be better about going outside than the brooder bunch of last winter.