E.B.S.W. - 15:30hrs
Still a good number of hirundines present with 250+ estimated.  There were many Sand Martins far more than breed along the Irwell.
Very few remained at 17:00 hrs though a flock of c100 House Martins were feeding over the lower end of the works.
Pied Wag. numbers are dropping gradually with just c8 present, no Yellow Wag. yet. But keep looking.
Bob.