Dipper and Grey Wagtail were present on the beck outside Dean Clough cafe today, as they often are.
I had never noticed watercress there before. Perhaps it has escaped from the cafe! Also a smaller floating plant, possibly blinks ( Montia fontana.) Water plants are difficult to identify, many being very similar due to convergent evolution. These two could get washed away in times of high water.
Watercress occurs in a field pond at Oats Royd, near Holmfield, and was in great quantity in a ditch at West Vale, east of the garden centre, below the wall next to the main rd., till it was cleaned out. The plants gave shelter to a Water Shrew which could be watched feeding if you looked over the wall. The plants and animal could return.
Coincidentally, there has been a water shrew sighting in a small stream near the pond with watercress at Oats Royd.