Baby Book Says

Baby Book says:
Identification
Hand or footprints
Paste copy of prints here.

Tricky word, this Identification.
So this is how it starts
Little feet, little hands.
A piece of fine brown hair.

When I learned to say I
 It was like learning staccato. I, I, I.
No longer just toes and fingers
Now I want. I want. I want.

When I knew I had a name
It was like learning a bird call.
Other birds would shout it out
A million times a year.