thanks for the guidance @Molpet - very useful. Assuming she comes off for breakfast tomorrow as she did this am, I'll be able to assess access, as well as count the number of eggs. There is quite a lot of plant material between her and the outside world which will need to be pruned so I can reach in to get her.Move her at night. Put her in a carrier and eggs separate. Put eggs in new nest and put her a ft away if she is flighty. Might be able to put her on the eggs if she is calm. Block her off from old nest