it's not crows that like shiny things it's Magpies. They are the ones that steal rings etc.

https://www.nwhc.usgs.gov/images/magpie.jpg

Looks a bit like a crow but with a white belly.

render is looking MUCH better now nirsul! Although I would change the position of your light (Or add one) that will give you a nice "schwing" spec hit down the front end of the plane. Cause it looks too diffuse and too flat at the moment.

Alan