anons digging on the cv19 stuff, tuck this away, may be relevent someday. looks like a cv19 'designed' for birds.
The only known host for Suttonella indologenes is humans, however a new species, Suttonella ornithocola has been discovered to cause endocarditis in birds. This makes Suttonella ornithocola the second known species in the genus Suttonella.[6]
https://en.wikipedia.org/wiki/Suttonella_indologenes
https://www.theguardian.com/environment/2020/apr/22/mystery-bird-illness-investigated-after-german-blue-tit-deaths
https://www.gardenwildlifehealth.org/portfolio/suttonella-ornithocola-infection-in-garden-birds/