the birds only stay as long as it's summer once the warmth leaves they leave too find somewhere new then come back when it's summer again again again and again and when they were young the chicks only stay as long as they are helpless once their need is gone they're gone too find somewhere new leave behind the nurturing parents who raised them cared for them *loved* them and those chicks they never come back it's the same with people too people only stay as long as times are good once the good times are gone they're gone too find someone new then come back when times are good again over over and over again people only stay as long as they need you once their need for you leaves they leave too find someone new leave behind the friend who helped them who was there for them cared for them *loved* them and people they never come back