This is the third known instance of a bird flying into a drivetrain. The first was when I saw a crow fly right into a fellow cyclists wheel and out the other side. The crow kept flying. Then one time I rode right over a seagull; don’t think that one made it. Now, this third one happened to another cyclist during a descent down Madrona hill and if you look close at the front derailleur you can see the feathery evidence.