gone out

It was a beautiful spring day, warm temperature...
I decided to open the door of the glasshouse of the butterfly again.

I noticed he did not eat of the nectar I had put in front of him,
I tried suggarwater,
I had put some flowers in front of him...
I did not see him taking any of it.
I also don't know how long they can live without food.

So I opened the door again to let him go if he wanted so.
within half an hour he sat on the blue anemome,
and one hour later he had gone out.
Did not see him back.
I hope he will find some flowers he likes.