If you place small seeds (< 20 mg, e.g. fig seeds) on the ground in forest in tropical and subtropical Asia, small ants soon appear and carry them away. I assume the seeds are eaten, but I cannot find any publication that shows this. Pheidole ants often remove seeds and they have a major caste with (relatively) enormous heads. They look as if they could crush small seeds. Has anyone observed this, or found crushed seeds in Pheidole nests?