Bobby the bumblebee - small trail with the family

The path of Bobby the bumblebee starts end of  Wasenweiler at the cycle path. Can you find the solution of that puzzle? Bobby is a fat bumblebee, who is on the way early. He is searching for fresh nectar. He is building his nest in a hiding place and is getting himself to safety before the bee-eater catches him.

As the young queens are going to fly out Bobby has to make sure, that they will have their materials to build their nests next year. Please help Bobby to find out what they will need to build their nests.