Large red bird with grey back and long tail feathers

Observation - Large red bird with grey back and long tail feathers. Description: A largish bird with a melodious song not disimilar to a thrush. It's colouring was like a robin but it was much larger and had a red face and breast and long grey tail feathers. It was perched high up in a tall silver birch tree - it had moved by the time

A largish bird with a melodious song not disimilar to a thrush. It's colouring was like a robin but it was much larger and had a red face and breast and long grey tail feathers. It was perched high up in a tall silver birch tree - it had moved by the time I got my camera but I observed it clearly through my steiner skyhawk bins.