Hi, we've been watching a beautiful pair of blue tits who have nested in our nestbox in the garden. Sadly, we think one has been killed as we found some feathers that looked like one of them and they haven't been spotted since :-( We are worried that there may be eggs in the nestbox and what should we do next? We know in the UK it is illegal to disturb a nesting site currently, but if there are eggs, do we need to contact a rescue centre to incubate and hatch? Any advice appreciated, with thanks.