[tubebender]

I have read that it is a territorial thing with the fighting which they lose when fattening up in the Southern states before their long journey. Same on their return.

[JLO]

Thanks for info tubender! I didn't know about nor have I ever read about that before. Makes sense though, losing the territorial fight (to death unfortunatatly in the north), once they get ready for the big flight. Maybe they just want to all get along to survive, ya think? Just joshin' but not really!