I was encouraging (I was trying to be encouraging to) birders to cover more of the Upper Calder woodland cloughs for summer migrant songbirds. Jonathan S. had reported the first Common Redstarts at Hardcastle Crags. Matthew B went up Broadhead Clough and got this year's first reported Willow Warbler. Adrian Z said he had Redstarts in Broadhead Clough on numerous occasions, and I've had Wood Warbler there.
It seems that most birders go to to Hardcastle Crags, where there are known to be Common Redstarts, 2 species of Flycatcher, and Wood Warbler. Tree Pipits used to be present at the top end around Blake Dean.
Here is a list (not exhaustive) of woodlands in the Upper Calder Valley which seem to be little watched.
Withens Clough - WoodWa (Nick C)
Colden Clough inc. Eaves Wood - WoodWa, CRedstart (SB)
Brearley Wood - WoodWa (SB)
Stoodley Glen - WoodWa (SB)
Crow Nest Wood, Hebden Bridge - WoodWa (SB)
Jumble Hole Clough - WoodWa, PFly (Matt B)
Pudsey Clough, Cornholme - S.Fly, also Ring Ouzel higher up (SB)
Todmorden Edge Woods (behind the park) - S.Fly (SB)
Crimsworth Dean P.Fly (AVH et al)
The above records are over a period of years. Below are some others which look perfectly suitable for migrants.
Rawtenstall Wood - Hebden Bridge
Horsehold Scout - Hebden Bridge
Burnt Acre Wood
Callis Wood
Lumbutts Clough - Todmorden
Shaw Wood - Todmorden
Gorpley Clough - up Bacup Road
Wittonstall Clough - Cornholme
Ramsden Clough near Gordon Rigg's
Kilnhurst Wood - Todmorden
Cat Hole Clough - Lydgate
Dean Hey Wood - Cragg Vale
Let's start a thread on "Summer woodland migrant - new sites"
With apologies if I've missed anybody's records out.