HOW DOES IT HAPPEN?

In the park

they came out from some trees,

two kids holding hands.

How did this happen?

And the bird

that brought itself down

to the grass close by,

by what mysterious means

did it find itself there,

feeling the grass against its legs,

listening to the world wandering by?

And the trees nearby,

turning their arms to relax,

can anyone say

if something special

said they should do this?

And my legs just crossed themselves.

Does anyone know how or why?