It doesn't look like anything to me.
I know amber is fossilized tree resin, but at this point is it possible to somehow dissolve the amber without destroying what's inside it?
It would be interesting if it could be done so we could see the tail and feathers in real light without the amber being in between.
Also, from the picture, there are bits and pieces of vegetation not to mention at least one ant inside the specimen which could be recovered.
And what do you call it when the parents were subsisting mainly on rice and vegetables but their children and then grand-children start having various meats added to their diets?
That's the definition of generations. That a better diet shows such quick results is still evolution.
A rolling disk gathers no MOS.