Last few seconds in the life of ...

 I don't know what this insect is.  It's possible the warbler didn't know, either. 

It is also possible that neither of us cares.

It was caught.

The bird was content.  The insect was soon gone.

And the warbler was off to find another.

By the way, this bird is a bit of a tricky ID.  I think it is a female Yellow Warbler, but the eye ring and faint eyebrow could suggest another species, though probably still a female.  Whatever, she is still cute and was in our trees here by Lucky Lake during fall migration.  Though if she is a Yellow Warbler, she could have been here all summer.