This is to be my first year of beekeeping. I live in SE Michigan and late this winter I saw an internet add for package bees that would be available for pick up in Benton Harbor about the end of April. I sent in my deposit and a few weeks later received notice that the delivery date would be May 10. That date seemed fine, I still would have time before my fruit trees flower. Today I see on the website the delivery date is now May 31. Okay, so my question is can I still expect these colonies to develop enough strength to go into next winter? Should I just relax or panic and try to find another source?