Hello all,.
I got this bones some time ago, they come from Sauerland, Germany, more exactly the pleistocene depots in this area.
They weren't sold as bird bones, but when I compared it to a fossil bird femur it looked like a match.
Some bird experts here? I know @Auspex knows a lot from these animals.
The bones range from just under 1 cm to 1,5 cm.
Hope the pictures work.
Greetings.