I also suffer from Ornithophobia. I really really really cannot get near a bird, it has even progressed to other things that fly such as butterflies. It started when I was a really small child. I have even tried owning a pet bird which lasted, well not long at all, I just could not handle it.
I however tho, do not think it is silly. It is a real fear that many people experience. Yes I think they will peck me to death with their beaks and rip me apart with their talons. It doesn't even help when I don't know anyone who has perished this way. And Birds well, I do not want to kill them, I think that might entail somehow getting near them. I don't wish to harm them, I just wish them to never come within 500 ft of me.
The worst I have to worry about is the my back yard is a heron rookery, and that I have black birds with yellow and red tipped wings that literally dive bomb my head while hanging out in my back yard doing yard work, just pooping would be preferable. I also have humming birds that get way to close for my liking. We have a few bald eagles and owls, woodpeckers ect. It's not the best environment for me.
Do you want to overcome this?