Kathy I believe some states consider "feral" anything that has left an established man made hive, but I understand where you're coming from.
Yup, as soon as the swarm leaves your hive it is feral

I also know what you mean and personally differentiate by calling anything that has been feral for more than a year survivor. This is my own personal definition, there is nothing magic about 1 year, nor am I trying to set a standard.