Parrots Elephants Butterflies eat/drink clays minerals salts

In this documentary video clip, you will see parrots (Grays, Makaws, etc.) eating mineral rich clays off a cliff. Also, see a clip of elephants drinking water, digging pits, presumably to unleash minerals and salts deposits which can mix with thier bathing and drinking water. This is also a scene of butterflies drinking ground water in these mineral/salt depoist bedded water pools. And another scene of parrots grazing on the leaves of plants surrounding these mineral/salt rich deposits. Presumably in all instances these animals and insects are doing so to either supplement their diet with these minerals and/or to neutralize toxic substances in the seeds or other plants they are eating such as seed and nuts. Presumably they may be using the minerals to alkanize thier bodies as well.