@misc{indiciae93681efca42e,
  title = {Say what? Bivalent singing in Vermivora warblers},
  author = {Gunnar R. Kramer and R. Kyle Pagel and Kate Maley and Cassandra Ziegler and Sean M. Peterson and David E. Andersen and David A. Buehler and Henry M. Streby},
  year = {2019},
  doi = {10.1002/ecy.2881},
  url = {https://pubs.usgs.gov/publication/70228152},
  note = {Source identifier: 70228152}
}