Hi Jens
The only thing that comes to mind is that referred to in Pat Morris’s ‘Hedgehogs’ book – in the Chapter ‘Winter Nesting’. ‘ ….. studied hedgehogs in a West London park for six winters, recording when and where the nests (hibernacula) were built, how often they were used and how long they lasted …. ‘ etc.
Regarding the place you made for nesting. Sometimes it takes a bit of time before they use a place. I had one of my boxes for at least two years before a young hedgehogs decided to make a nest in it this winter.
There was a study about hedgehog boxes done last year, and I believe the results are due out in the Spring.
One of the problems about hedgehogs and research, as I understand it, is funding, so that there are loads of things it would be nice to have research about, but due to low funding they have to be very carefully chosen.
