Actually feeding bread or any other human food is not good for Ducks/Gease etc. So please do not feed them human food. It really makes me angry and shows only ignorance towards animals.
I mean...yeah? Most people are ignorant of things like this because they don't know any better. I can't be particularly upset at some random park goer that doesn't know all the nutritional needs of a duck, because why would I assume that's knowledge they would have? Feeding ducks bread is sort-of ingrained in the public mind, it will take education and time to undo that.
I've seen signs up at some parks lately that explain this to people, and that's a start, but they need to be more widespread, and it will take time.
it's a volume thing, their tiny bellies need dense foods like seeds. They eat a piece of bread it fluffs up in their belly and now they aren't hungry any more but they don't have a belly full of nutrition just some sugary carbs.
It doesn't really have any nutritional value for them but it fills them up so they don't eat as much of the things that they should be eating to get proper nutrition.
When i learned about bread years ago, i went outside with all the peas and goodies i could find.
The ducks approached me, waiting for some bread. I gave them peas and they did not understand what it was and refused to even inspect it.
It ended with me giving up, laying it on the ground and retreating. And even then, they did not bother to check...
That's the oddest thing. I had a friend who had some ducks as pets, and they were nearly as voracious as chickens in eating anything they could find, good, bad, or otherwise, even if it was new.
If this happens, maybe we should attempt to wake xkcd's Sheeple. Maybe it would be worse for us, but it can't be by much and the ducks wouldn't be able to have everything their own way either.