Metaphors

I am a riddle
Close to blades of grass
Jumping in the air with the agile of a flea
Sometimes I can soar across the grass with the grace of a
helicopter
I can be small, the size of a bee
Living in the big wide world, the world is my oyster!
Chirping a loud annoying chirp
Preferring green to any other colour
Not escaping being eaten by bigger animals.
You will find me in your garden!