Do flamingos help humans in any way?

Flamingos do not eat humans. They eat a lot of shrimp, also mollusks, plankton, crabs, small fish and insect larvae. They also eat some plants like grass shoots and algae.

As to whether they *could* eat a human... I suppose it is possible, but only if someone ground up a human and fed it to a flamingo in tiny, tiny pieces. Which would of course also be gross, unethical, and illegal.