I went for a walk around Abbey Lakes at Upholland this afternoon; lakes being a bit of a misnomer as there is only one small lake. Blackcaps were well represented with at least 5 singing males and a Common Sandpiper was a good record for this small site. I found a couple of nests without really trying including the one in the photographs below.
Spot the nest.
This should make it a lot easier. The female is sat on the nest.
and there she is.
It is not unusual for Mallards to nest in natural cavities in trees and I have even known them use a Kestrel nest box and a basket that had been put up for Long-eared Owls. This particular nest was 3 metres off the ground and may have been used by this female in previous years.