Vocal individuality has been used as a monitoring tool. and two criteria are a prerequisite: high variation among individuals and low variation within individuals. and vocal consistency within and across seasons. We examined individual variation in the territorial hoot calls of the tawny owl (Strix aluco) to discriminate between males and to assess a possible conservation technique th... https://www.inmuebleslasmercedes.com/product-category/plastic-tumbers/