As part of a previous project I had collected found objects including old nests along a specific walk (One Year , One Walk). I had made a number of ceramic nests and decided to place these made nests in trees along the footpath in Adams Wood. Some were hidden, almost impossible to see, others rested in the crooks of branches or in clefts of the tree. Some disappeared almost immediately, others suffered from frost damage over the winter, but one year on many are still in place.  

More details can be found at Chilterns Woodlands Project

http://www.chilternsaonb.org/caring/stwp_site_details.asp?siteID=614&frommap=true