Little Marauder by Margaret Sangster Bird poem

Oh, Robin, my Robin, so clever and merry,
Pray why do you never peck twice at a cherry?
You fly at the daintiest one you can see,
Eat a morsel yourself, and just spoil it for me.

Oh, Robin, sweet Robin, you dear little warden,
You're welcome to feast on the fruit in my garden:
I know what invaders you're driving away
From flower and tree through the long summer day.

But, Robin, bright Robin, please listen to reason:
You waste lots of cherries, my pet, every season.
I finish my cake to the very last crumb—
Why can not you finish your cherry or plum?