Bird's convo

I hear it all the time the joyful sounds made by the birds sometimes they are chirping, sometimes humming and there is nightingale singing, there is hen which is like an alarm clock, there is crow that nags and woodpecker that beats it beak like a stick on the drum behind all these sounds what are you talking about? Are you gossip about humans and other species? Are you whining about your day to day hardships? Are you motivating your little ones on how to survive and what future holds them? Or are you scolding for being mischievous? Or are you lecturing them to learn to fly better and collect food? Or are you cursing out everyone else and the almighty? What exactly is behind those sounds of yours, birds