@misc{indiciaec5893b01492e,
  title = {Egg size variation among tropical and temperate songbirds: An embryonic temperature hypothesis},
  author = {T. E. Martin},
  year = {2008},
  doi = {10.1073/pnas.0709366105},
  url = {https://pubs.usgs.gov/publication/70000387},
  note = {Source identifier: 70000387}
}