Recently a new peer-review article on our project was published. Together with colleagues from Belgium, the Czech Republic and the UK, an article was written about the benefits and challenges of working with volunteers in roadkill projects. In 4 projects we worked with very different groups. The complete article is of course freely available at: https://www.sciencedirect.com/science/article/pii/S1617138119303449 The abstract: Daily, a large number of animals are killed on European roads due to collisions with vehicles. A high proportion of these events, however, are not documented, as those obliged to collect such data, only record a small proportion; the police only register collisions that lead to traffic accidents, and hunters only collect data on game wildlife. Such reports disproportionately under-records small vertebrates such as birds, small mammals, amphibians and reptiles. In the last decade, however, national wildlife roadkill reporting systems have been launched, largely working with citizen scientists to collect roadkill data on a national basis that could fill this data gap. The aim of this study is, therefore, to describe for the first time, existing projects in Europe, and the user groups that submit data to them. To give a deeper understanding of such projects, we describe exemplar scientific roadkill reporting…