I have been sailing under Acton Bridge on the River Weaver for a few weeks and have seen the Swallows nesting in the girders underneath.
Acton Swing Bridge
I had the chance to get a closer look a couple of days ago and had a wander along the tow path.
Most of the nests are over the water but this one was above the path...
...walkers and cyclists pass it by everyday... most of them probably don't even notice it.
I took a couple of images then carried on my way... from a distance I watched as the adults fed their young.
Swallows are all along the River Weaver and feeding alongside the Sand and House Martins.