What is "skvader"

The skvader is a Swedish fictional creature that was constructed in 1918 by the taxidermist Rudolf Granberg and is permanently displayed at the museum at Norra Berget in Sundsvall. It has the forequarters and hindlegs of a European hare (Lepus europaeus), and the back, wings and tail of a female wood grouse (Tetrao urogallus). It was later jokingly given the Latin name Tetrao lepus pseudo-hybridus rarissimus L.