The birds must be getting a bit desperate as this long cold snap shows little sign of abating. This Moorhen (Gallinula chloropus) on the canal seemed to be trying to chip through the ice to the water below. The photo shows very clearly the bird's curious feet, with its long toes, well adapted to walking on soft uneven surfaces. They do swim but they mostly inhabit the vegetated margins of lakes and rivers. Resident in the UK, they eat water plants, seeds, fruit, grasses, insects, snails and worms - most of which must be in short supply in this weather.