We would like to investigate if there is some relationship between activity of honey bees and density of solitary bee populations. For this purpose we plan to install some standardised solitary bee traps and compare density of their populations with monitoring of honey and pollen flow to our monitored honey bee hives. Antonín Přidal, popular scientist and bee expert working at Mendel University in Brno helped us to plan optimal parameters of traps and their correct installation in the field. We would thank him for his willingness.