This is the reason people have been finding dead geese along the Ashton Canal

manchestereveningnews.co.uk:

RSPCA recovered two dead and three sick geese, which later had to be put down, from the canal on Monday afternoon. On Tuesday another three birds were found dead, and today, a further two.Many people took to social media to say they had come across dead birds and fish, or seen them acting very strangely.Animal Collection Officer, Jessica Pierce, says a deadly disease called Avian Botulism is responsible.Speaking to the M.E.N, she said: "Because of lockdown there aren't as many boats going through which means the water in the canal has less oxygen."When you combine that with the intense hot weather we've had, the bread and food that is getting thrown in goes rotten."The geese eat the food and it causes something called Avian.