to clear up a misconception:
bread is a fine treat for chickens. it will not cause any health problems to chickens if fed in moderation.
however, bread can cause nutritional deficiencies/angel-wing deformity if fed in large quantities to
waterfowl like ducks and geese. wild ducks shouldn’t be fed bread. with pet ducks a piece of bread every once and awhile is NOT going to hurt them.
bread is not some scary dangerous thing for birds. its not the most nutritious thing, but its not dangerous.
It’s kind of like if there was a wild pack of children living in a popular playground where almost daily random people would bring them skittles so much so that the children stopped hunting and scavenging and started subsiding purely on skittles that would be bad for them.
But that doesn’t mean skittles will poison your own children
this is a terrifying analogy thank you
Bread isn’t toxic, it just has no nutritional value. It’s a fine treat for just about any animal that likes it, if you only give them a bit. Heck, one of my cats likes bread, I give him a little piece now and then.
If you want to feed ducks, get them something that’s good for them. Actual duck feed, birdseed, greens, or oats are good. And stick to ones that live at a park and are already habituated, don’t go find wild ducks and try to make friends. Leave the wild ones alone.