@misc{indiciae507f478ea3ee,
  title = {Mercury accumulation and loss in mallard eggs},
  author = {G. H. Heinz and D. J. Hoffman},
  year = {2004},
  doi = {10.1897/03-111},
  url = {https://pubs.usgs.gov/publication/5224292},
  note = {Source identifier: 5224292}
}