@misc{indiciae11fc13b9e609,
  title = {Ecosystem consequences of bird declines.},
  author = {Cağan H Sekercioğlu and Gretchen C Daily and Paul R Ehrlich},
  year = {2004},
  doi = {10.1073/pnas.0408049101},
  url = {https://pubmed.ncbi.nlm.nih.gov/15601765/},
  note = {Source identifier: 15601765}
}