Magnetic Cereal?

I dont really know what else to call it but that. Ya know when your eating a bowl of cereal and you get down to the last bit of cereal left. Enough were its no longer piled on top of each other, but each piece freely floating around in the milk. Why does cereal attract to other pieces and then stick once they come close enough. It looks like theyre little magnets. Is this due to the high iron levels in the cereal?