An Ordinary Messenger Arrives Dressed in Bright Colors

The sunflower seeds brought in a new guest this morning -
A purple finch, I think.
I looked for you, but you weren't there.
It was wonderful even so,  I didn't need you to see that,
But it wasn't magical.

It's the same as being sick, really - this thing I have for you.
In time you recover
Or you die.