Bone from what animal?

[esther19]

I found this piece of skeleton in the south of Portugal near the sea. Can anybody tell me what it is (pelvis?) and from what kind of animal? Maybe a bird? it is quite light. in the area were, besides lots of seagulls, spoonbills, cattle egrets, little egrets and flamengos.

[carter]

dorsal bone of a kind of bird.In the second picture,the left is the posterior and the right anterior.This miserable bird is not very big.