@misc{indiciae9c7a1c87bd57,
  title = {Colour polymorphism in birds: causes and functions.},
  author = {P Galeotti and D Rubolini and P O Dunn and M Fasola},
  year = {2003},
  doi = {10.1046/j.1420-9101.2003.00569.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/14632227/},
  note = {Source identifier: 14632227}
}