Effects of pesticides on the breeding success of the Eurasian Wryneck (Jynx torquilla) in vineyards

My Master project is a collaboration with the association SORBUS that installed in previous years a network of nesting boxes in the vineyards of Neuchâtel. In the last couple of years, they have noticed that the Eurasian wryneck population reached a plateau. My project aims to investigate the reasons behind, by asking if pesticides could be an explanation. I will therfore attempt to link the breeding success of the Eurasian wryneck Jynx torquilla in the vineyard of Neuchâtel to the amount of pesticides found in the ants they feed on.