Cue for a song?

"Sumer Is Icumen In" ( Sung in Middle English. )

This one.

WHY?!?
You may well ask.
Well - I saw this and the tune kinda YELLED at me.
"This" BTW is a Tortoiseshell Butterfly. I went out for one of my periodic "Crocme" shots.
(Thereby hangs another tale I may have told, can't remember.)
Just prior to "Click" a movement caught my eye. After "click" I had time for a fleeting glimpse as it took off again, to be certain I was right.

I did intend to enbigger and crop it to make it more visible, but suddenly thinked a thunk ... Lets see if they can spot it.