Verses Few of the Boy of Blue

You might think it's silly,
but I called this blue bug Billy.

Out and back went Bill.
Why can't he sit more still?

I tried to warn old Bill,
that the flying birds wanted their fill.

The birds like to eat 'flies like Bill,
much like whales eat krill.

The others couldn't warn Bill,
you see...dragonflies cannot trill.

What if he isn't a Bill?
Then I guess we'll call her Jill.

What's all the white stuff behind Billy?
It's a bloomed-out water lily.

I could add more verses of Bill,
but why make it Bill overkill?