Crow on a snowman

Yesterday it snowed, and some of it has settled.  I went out for my morning walk in a thin, desultory rain.  At the end of Cavendish Avenue is a block of flats, three storeys high with a big communal garden.  Someone had managed to make a very small snowman, about a foot high, sitting in the middle of the grass.  When I passed a crow was sitting on its head pecking away enthusiastically.  Practising for Ragnarök?