@misc{indiciaee2b8b5f9c6c3,
  title = {Smithsonian scientific series / Warm-blooded vertebrates. Part I: Birds — Illustration, Plate 16},
  year = {1931},
  url = {https://www.biodiversitylibrary.org/page/15546164},
  note = {Source identifier: page-15546164}
}