How to be free as a bird?

Grow some wings and head south, and never come back.

Lynyrd Skynyrd, Alabama.  Oakland Coliseum on YouTube.

with luck you might be and fly away you troll .

You already are free as a bird because only a bird would post a philosophical question in the botany category.  Favorite answer please, trying to reach Level 100.

Be willing to go about naked, eating worms out of the dirt and pooping anywhere on anyone.

There is no such thing as absolute freedom. It depends on your feeling. I.e. before been targeted by a soaring hawk, a bird could fly freely as it likes. No matter how you get pompous, It won't make any difference. If jumping off a roof, the free feeling maintains until touching the ground. 

Birds are not free. They live short lives desperate to reproduce before they die to maintain their population. "Freedom" just means unaware of any ambitions beyond your current situation. Dare I say "stupid". Animals wild and domestic are "free" because they have no responsibilities beyond their instinct. Being cast out of the garden of Eden means loosing your "freedom" to live and die a dumb animal, ie given the knowledge of good and evil.

Completely liberated" is a tune initially made and recorded in 1977 as a home demo by John Lennon. In 1995 a studio variant of the chronicle, fusing commitments from Paul McCartney, George Harrison and Ringo Starr, was delivered as a solitary by the Beatles, 25 years after their separation.

Sit on a fence.  You'll soon be caught & eaten by a cat.  "Freedom's just another word for nothing left to lose."

Yet you post this under botany (plants) instead of philosophy.