Summer is Nigh

Summer is nigh!
How do i Know?
Why this very day
A robin sat
Upon a tilting spay
And merrily sang
A song of May
Jack frost has fled
From the rippling brook
And a trout peeped out,
From his shady nook.
A butterfly too
Flew lazily by
And the willow catkins
Shook up from high
Their yellow dust
As I passed by
And so i know
Summer is nigh!