Oriental Wall Art

I honestly don't have very good information about these. My husband's mother bought these at an auction of a truck that had been in an accident and the owners wanted everything sold, so there wasn't much information about them anyway.

These are a set of four and we have them up on our wall. They are birds made out of some sort of materials (stone? plastic? I have no idea) mounted on a shiny black background (laquered black paint maybe) with golden paint on them and black wood border. There is no artist's signature anywhere nor any identifying marks on the back (just solid black paint). I'm hoping someone could point me in the right direction with my research.