An unknown number of animals, between tens and hundreds, are killed on the roads and railways in the Czech Republic every day. Neither the species involved nor the ratios are generally known. www.srazenazver.cz was launched to coveras many AVC sources as possible in one place. This application is accessible through common web browsers and allows the user to input, edit and browse data gathered by other users. Every registered user can add data. Users have several authorizations which are based on their status. The majority of data consist of ungulates.