Was it Demosthenes or some other ancient Greek who supposedly was killed when he fell asleep by the shore and a gull dropped a clam on him from agreat height, mistaking his bald head for a rock?

BTW, much is made of certain mokeys using sticks to poke anys or larvae out of crevices, tool usage indicating a high level of intelligence. Doesn't using a rock as a 'nutcracker' qualify, too?