Installed 3 packages in 3 med boxes with new frames and plastic foundation last weekend. Queen cage was set on screened bottom board and covered with bees when I dumped the them in the box as I have done in the past with good results. I put on entrance feeders with 1:1 syrup, inner cover and telescoping top the walked away and observed from a distance each day. First two days produced activity as expected, bees flying and taking feed. On third day, hive 1 had almost no activity and on fourth day hive two was in same condition. today I opened the hives, No bees in hive one and none in hive two. Hive three is full and looking strong. Hive one and two had started drawing comb and storing pollen and had a 1/4 cup dead bees on bottom of each. Any ideas?