Chronique ornithologique romande: Printemps-été et nidifications 2021.

The article informs that regular rainfall, violent storms leading to the destruction of crops by hail or flooding as in Cressier NE, major flooding of the sub-Jura lakes, had direct consequences on Ornithological chronicle for inhabitants of French-speaking Switzerland with Spring-summer and nesting 2021. It mentions about meteorological conditions of a year and specific events migratory blockages that influence the success of reproduction that marked presence of Cisticola juncidis.