Read the given poem and answer the following questions  -

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 then hopped sidewise 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 rowed him softer Home -

Than Oars divide the Ocean,

Too silver for a seam,

Or Butterflies, off Banks of Noon,

Leap, plashless as they swim.