Missing Redstarts and Pied Flys

No sign of Redstart at Scout Wood - only Whitethroat, Chaffinch, Willow Warbler, Robin, Wren, Blackbird, Jackdaw.
No sign of Redstart down the Craggs. This bird has not been seen since Thursday. Also no sign of any Pied Flys although 2 males are allegedly still kicking around.
No sign of any Wood Warblers in historic location.
With all the wooded valleys in Calderdale, I'm surprised we haven't found more of these species. But then again, I don't see many birders these days, either.