@article{Bos2019Takkeling,
   title     = {De Sperwer Accipiter nisus als broedvogel in de provincie Groningen in 2018},
   author    = {Bos, Johan},
   journal   = {De Takkeling},
   volume    = {27},
   number    = {2},
   pages     = {146--152},
   year      = {2019}
}