This puzzle is based on a mezzotint printed in colors by Robert John Thornton featuring a bunch of roses within which two thrushes are nesting, in the background a temple with a statue. If you didn't know, mezzotint is a printmaking process of the intaglio family, technically a drypoint method. This technique can achieve a high level of quality and richness in the print.
After enabling piece rotation you can rotate a piece by double clicking/ tapping on it or pressing the space key while dragging the piece
After enabling piece rotation you can rotate a piece by double clicking/ tapping on it or pressing the space key while dragging the piece