Barn owls are extremely rare and not reported in Ontario due crowds they would cause... rumors of them being around Fort Erie area and down by Pelee persist. There was an article couple years ago in a paper about wind turbines being placed in a area which locals were protesting, article seems normal ..until it was stated that the turbines could effect the nesting barn owls in a barn nearby..... the article still brought peolpe looking even thought it was determined the owls hadn't used the barn for several years
I was so determined to see a barn owl , I book a trip to Arizona to see them...but that has all changed due to covid now
Keep looking and maybe someday in Ontario.....last year one was spotted in Presquille park in Oct for one day, drew crowds of 200 birders..I wasn't one of them , didn't heard until after and this year one was spotted and photographed up by Kincardine area/.... not sure if these birds were local breeders or just vagrants migrating