I heard a brief screech in Todmorden town centre yesterday, but was not able to scan upwards as I was busy at the ATM. I didn't hear any further calls, and assumed it must have been birds passing through.
This morning, however, there were four birds circling the Wellington Road area, and I assume the same four birds were in the same area when I returned from work this evening. I am sure they were later arriving back in the late 1990's when I first got interested?
I haven't seen any House Martins in Todmorden yet, although I did spot some in suburban Manchester yesterday..