Well, I'm going to mildly disagree. While it may not do them any harm, they're better off being in their hive than in the package for days. We hived four packages yesterday in 35 degree temps, the bees were calm, we didn't shake them, we left the packages inside within an empty super, and we'll take them out probably tomorrow (Greg has checked them and most of the bees have left the packages, but it's so windy out there he doesn't want to shake the rest out). Our club members were discussing hiving or holding off yesterday, and the consensus was get them in the hive. So we did! :)