Have a look too at the work of photographer Chris Jordon.  He looks at the birds after they have died.

https://www.google.com/search?q=%22Chris+Jordan%22+photographer+plastic+birds&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi9-LG479bNAhUMCcAKHRMXAYIQ_AUICSgC