It works that way with ANYTHING ready for harvest. Got a PERFECT tomato on the vine? A groundhog will take a nice big bite out of it for you overnight.
Got green beans ready to go? The rabbits will harvest them for you.
How about melons? Gophers just LOVE melons.
Ready to harvest Blueberries? Birds beat ya to it!
Nature always knows where the best treats are. :)
My favorite blueberry patch uses bird netting to ward off them off...we pick under the nets with no airborne competition...sweet!