Answer:
I am the home for feathery animals.
I am constantly overlooked by everyone but everyone has me.
I am a busy worker who is a water mammal.
My geometry is lost in the night to be found in daylight's break. The rigors of time have torn me to shreds, yet I stand to protect that which lies within. What am I?
When I live I cry if you don't kill me I'll die.
It's what light turns into in the night