Illustration of a common hawk-cuckoo (Hierococcyx varius Syn Cuculus varius). 18th century watercolor painting by Lady Elizabeth Symonds Gwillim (1763-1807). Lady Gwillim painted a series of about 200 watercolours of Indian birds. Produced about 20 years before John James Audubon, her work has been acclaimed for its accuracy and natural postures as they were drawn from observations of the birds in life.