@article{WalkerRozmanWitte2012,
  author    = {Mark Walker and Jan Rozman and Klaudia Witte},
  title     = {Brutkolonie des Mauerseglers (Apus apus) in einer Autobr{\"u}cke},
  journal   = {Vogelwarte : Zeitschrift f{\"u}r Vogelkunde},
  volume    = {47},
  number    = {1},
  pages     = {41 -- 43},
  year      = {2012},
}