A bird came down the walk:
He did not know I saw;
He bit an angle-worm in halves
And ate the fellow, raw.

And then he drank a dew
From a convenient grass,
And the hopped sideways to the wall
To let a beetle pass.

He glanced with rapid eyes
That hurried all abroad, -
They looked like frightened beads, I thought
He stirred his velvet head.

Like one in danger; cautious,
I offered him a crumb,
And he unrolled his feathers
And rolled him softer home

Then oars divide the ocean,
Too silver for a seam,
Or butterflies, off banks of noon,
Leap, plashless, as they swim.

Emily Dickinson

http://www.poemhunter.com/poem/bird-2/