Magpie post-mortem study

I found this unfortunate bird (European Magpie, Pica pica) on a farm track near where I live. I don't know what caused its demise - it has no apparent injuries, but it does seem a bit thin perhaps. Anyway, I took the opportunity to do a pencil study. Hoping to complete a watercolour study at some point too. Various graphite pencils in a Stillman & Birn zeta journal, 8 by 12 inch.