Kidney Bean!

This is from Babycenter.com: "Your baby is now 5/8 of an inch long, about the size of a kidney bean. New this week: Webbed fingers and toes are poking out from your baby's hands and feet, his eyelids practically cover his eyes, breathing tubes extend from his throat to the branches of his developing lungs, and his "tail" is just about gone. His arms have lengthened, too, and his hands are now flexed at the wrist and meet over his heart. His knee joints have formed, and his feet may be long enough to meet in front of his body. In his brain, nerve cells are branching out to connect with one another, forming primitive neural pathways."

Isn't a blueberry bigger than a kidney bean?