Willow ptarmigan complicated changes in plumage several times a year and the differing colour and pattern of the summer plumage: The willow ptarmigan often hybridises with the black grouse ("Tetrao tetrix") and the hazel grouse ("Tetrastes bonasia") and occasionally with the western capercaillie ("Tetrao urogallus"), the spruce grouse ("Falcipennis canadensis") and the rock ptarmigan ("Lagopus muta"). During the Pleistocene, the willow ptarmigan widely occurred in continental Europe. Authors who recognize paleosubspecies have named the Pleistocene willow ptarmigan "L. l. noaillensis" (though the older name "medius" might be the correct one). These marginally different birds are said to have gradually changed from the
Winter Mountain Smyth at his home in Donegal, Ireland, and shortly afterwards formed Winter Mountain. They began touring after winning a 'battle of the bands' competition in Derry, Northern Ireland. Their prize was two days at a local recording studio. They used the session to record what would become their debut EP, which featured five original songs. After a year of performing in pubs and folk clubs across the UK and Ireland, Winter Mountain were given the opportunity to accompany Northern Irish folk singer Cara Dillon at a theatre in Donegal. They presented their EP to Dillon's husband and manager Sam Lakeman