Long-lived chemicals that were banned years or even decades ago in the U.S. and Canada are still turning up in the bodies of fish and migrating terns in the Great Lakes, and they continue to affect the health of those threatened birds.
Scientists found all three chemicals they checked for in the brains and livers of more than two dozen common terns, at all life stages – chicks, juveniles and adults.
Great Lakes Now
https://www.greatlakesnow.org/2020/11/legacy-pollutants-great-lakes-terns-emerald-shiners/