At 11.55 an unringed female landed on the edge of Nest 4 and then flew into the nest.
Here is a short clip of her arrival. Press HD for best quality, please excuse pixellation.
She moved some material and scraped in the nest cup area.
The osprey left after 13 minutes (cue doubt re identity!) but has returned and is carrying on with ‘nestoration’. It’s wonderful to have her back – and to be able to follow Nest 4 via the nestcam, many thanks, Forestry Commission.