I’m glad they returned!One time I had a dog attack and the roosters led all their groups of hens way out into the woods, they all returned before night though. I also had a dog chase one of the roosters off the property, I had to go to school but when I came back he had returned. I have never had a bird go missing for more than one night, 2 months is a lot of time, it kinda sounds like a fox got yours.