Fall this year is as late as spring was. But now it's there. The chain of stones hanging in the tree is made of flintstone. There's lot of flintstone on baltic shores. Occasionaly you find some with holes. Assemblied as chains on a rope and hanging from trees the peasantry in Schleswig-Holsten call them Hühnergötter (chicken-gods in english). I have been told that they irritate chicken and so prevent them from running into the crop. In our garden of cause it's just decoration.