Instead of a tiny person, a squirrel in a monocle and top hat scurries down the ladder in a huff. He loudly proclaims that he is Sir Nutregard Tamias Chippendale the Fourth, that you are trespassing on his private estate, and that this oblong orb is a priceless treasure which you have no business putting your grubby commoner's hands upon.
You tell him that you are pretty sure that it's just an egg, like from a bird or lizard or something, and he gets VERY offended at the notion.