Yes, like Kathyp said, Leave then alone. You can put your ear to the side of the hive body and lightly tap on the side and they will let you know by the humming sound that they are in there. Unless you have some urgent reason they should not be opened for very long and only above 40 degrees. Every time you break their winter seal you are causing them to use extra work and there precious stores to re seal the cracks. my put.doak