Several in my back yard.

Pigeon?

With the pine cone as a size reference, those feathers are a good size. This is a complete guess, but I would think from a hawk of some type.

Turkey

quote:

Originally posted by old rugged cross:
Turkey

I bet you are right.

Secondary wing feathers from the right wing of an adult Bald Eagle. Close ups of the top and underside of the shafts would be helpful.

More pictures

Turkey vulture. Grey underside and black top surface

Don’t forget that a lot of immature birds are molting into the adult plumage about now and those immature feathers will be drab, therefore might be misleading when it comes to id.

While that’s true, what immature bird in America would have 10” long secondary feathers? Bald Eagles go from fairly consistent color to really mottled to what we think of as Bald Eagles as adults. Here’s a one year old Bald Eagle in front of our house:



I believe hawks is correct; turkey vulture because of the light colored underside.