Good point! There have been mass goose and duck kills in certain areas of Minnesota over the years blamed on the ingestion of lead shot. Seems to be a problem with deer meat from deer killed with lead-based ammo as well.
https://www.outdoorlife.com/is-game-meat-shot-with-lead-safe-to-eat/
When I was a lad and visiting relatives in Idaho, my cousin and I would compete to see who got the most lead pellets out of the duck or goose we were eating. We both have survived, so far.