haha I am sure they have or maybe you have just killed off all the adults and the young ones haven't figured out that theres a free meal at your place. I am sure you will see them soon if there is when the weather gets worse... But it sure would be nice to think that they send messages to their friends!!! I still check and wait even though I haven't seen one for a while...Darn devils come when you least expect it... Good luck to you!!
