“I find that a duck’s opinion of me is influenced by whether or not I have bread. A duck loves bread, but he does not have the capability to buy a loaf. That’s the biggest joke on the duck ever. If I worked at a convenience store, and a duck came in and stole a loaf of bread, I would let him go. I’d say, ‘Come back tomorrow, bring your friends!’ ― Mitch Hedberg
Plus bread in a pond or water system will eventually rot, adding bad bacteria and upsetting the water cycle. Plus it is also bad for the fish:
https://fishyfeatures.com/can-fish-eat-bread-the-surprising-truth-revealed/
Boo bread, boo!