@misc{OPUS4-31102,
  title     = {Die Vogelwarte : Band 43, Heft 2},
  booktitle = {Vogelwarte : Zeitschrift f{\"u}r Vogelkunde},
  volume    = {43},
  number    = {2},
  type      = {periodicalpart},
  pages     = {97 -- 159},
  year        = {2013},
}