Between Stevan's lectures today we've had quite a bit of fun.  Fortunately we have a suitable sledging hill close to the house, and Peggy and Lexie are both exhausted from running after the sledge and chasing (and then killing) snowballs.  I'm not sure what it is about a snowball that offends a terrier, but they clearly require drastic action to be taken against them when they're caught.

The birds are hungrier than ever:

But this robin was beautifully puffed up against the cold.