Going to preface this with a disclaimer:
The CDC says that birds don't host COVID-19
But, something to think about when we suddenly have an avian flu that's more persistent than has been seen previously:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3209365/
https://www.doherty.edu.au/news-events/news/wild-birds-are-neglected-hosts-for-coronaviruses