A park sign warning about the dangers of feeding bread to ducks and geese went viral on Wednesday, prompting tens of thousands of panicked reactions to the discovery. d @joshdunIive I'VE BEEN FEEDING DUCKS BREAD THIS WHOLE TIME IM SO ASHAMED IM SUCH A MONSTER 12:40 PM - 22 Mar 2017 Reply Retweet Favorite The sign reads: "Bread makes us ill, as it does not contain the right nutrition or calories that we need to keep us warm in winter. Rotting bread pollutes our water and causes nasty surface algae, which kills our fish and gives us diseases. It also makes our water smell." In short, bread for birds is a serious no-no. FOX The BBC has reported that bread in ponds can encourage the growth of surface algae, which in turn releases toxins that damage fish and the general ecosystem ducks thrive in. Bread has little nutritional value for ducks and can be a contributing factor in "angel wing", a condition that results in a bird's wings pointing out to the side rather than resting against its body. giphy.com The condition occurs when a bird has a high calorie diet with plenty of carbs and little vitamin D and E. Birds with angel wing can no longer fly. Many birds that have grown accustomed to being fed at parks by humans develop angel wing. The original tweet of the sign has over 30,000 retweets and has really shaken up people who are only now realising how damaging bread can be to ducks. Maddie Stibel @maddiestibs i'm about to cry. i've fed so many ducks bread https://t.co/sCEn241ofv 02:09 AM - 23 Mar 2017 Reply Retweet Favorite ally @Allyyy0115 Tell me why Stephanie just read that feeing ducks bread makes them sick & now she's crying. Someone help me 01:35 AM - 23 Mar 2017 Reply Retweet Favorite baby blue @AnnikaGastelum Holy fuck I use to feed the ducks bread at the golf course with my grandpa OH MY GOD I KILLED THE DUCKS😭😭😭😭😭😭 https://t.co/jD9Qeq4knV 02:09 AM - 23 Mar 2017 Reply Retweet Favorite toñy @carlosatapia96 @joshdunIive @beccccatron I was literally by a river today feed ducks bread :c 09:40 PM - 22 Mar 2017 Reply Retweet Favorite George Garcia @DamnItsGeorge Wow all this time I thought ducks loved bread 12:06 AM - 23 Mar 2017 Reply Retweet Favorite If you DO want to feed the ducks, stick to things like bird seed, cut lettuce, seedless grapes that have been cut in half and cooked rice. Tap to play or pause GIF Tap to play or pause GIF Tap to play or pause GIF Tap to play or pause GIF giphy.com That way we can keep the ducks healthy and thriving.