All the animals have been trying to find a shady place to rest during the heat of the day.  The ducklings sat under the duck house, the sheep lay under a tree (until I appeared with a barrow load of weeds culled from the asparagus bed) and the hens sat in the shade of a bush.  I wanted to continue weeding the asparagus bed and as I did so I spotted a black shape under one of the ferns.  It was Mabel trying to find a cool place to sleep.