@article{BosBazuinTakkeling2021,
   title     = {De Sperwer Accipiter nisus als broedvogel in de provincie Groningen in 2019 en 2020},
   author    = {Bos, Johan and Bazuin, Erik},
   journal   = {De Takkeling},
   volume    = {29},
   number    = {1},
   pages     = {85--92},
   year      = {2021}
}