Pied Flycatcher nest
Away from the nest boxes, we also had sightings of 1 Great-crested Grebe on the top reservoir, the Shag, which was still present on the bottom reservoir (thanks Luke), and a Grey Wagtail which was found feeding 3 juveniles (thanks again to Luke for this sighting). Canada Geese were heard calling as we walked through the woods, but weren't seen. Willow Warblers, Blackcap, Chiffchaff and Song Thrush were all singing.
The sun came out while we were there, which meant we saw a few butterflies, namely Green-veined White, 2 male Orange Tips and 2 Speckled Woods.