It's a mystery tome. I have been pondering it for a while. They are all in one spot where it looks like a pheasant was laying. There's just clumps of them--rooster and hen. Either the pheasant pulls them out or it was eaten by something, which I highly doubt. Lots of foxes live around there. I see these feathers all the time and will let you know if I figure it out. The one thing I can tell you for certain is that they were pulled out. It does not look like a bird died there at all. I'll keep you posted. Any further help would be appreciated.