Editing Homosexual behavior in animals (section)

====Ibises====
{{main|American white ibis#Breeding and lifespan}}
Research has shown that the environmental pollutant [[methylmercury]] can increase the prevalence of homosexual behavior in male [[American white ibis]]. The study involved exposing chicks in varying dosages to the chemical and measuring the degree of homosexual behavior in adulthood. The results discovered was that as the dosage was increased the likelihood of homosexual behavior also increased. The endocrine blocking feature of mercury has been suggested as a possible cause of sexual disruption in other bird species.<ref>{{cite journal|journal=Nature|title=Mercury causes homosexuality in male ibises|last1=Milton|first1=Joseph| name-list-style = vanc |doi=10.1038/news.2010.641|date=1 December 2010}}</ref><ref>{{cite journal | vauthors = Frederick P, Jayasena N | title = Altered pairing behaviour and reproductive success in white ibises exposed to environmentally relevant concentrations of methylmercury | journal = Proceedings. Biological Sciences | volume = 278 | issue = 1713 | pages = 1851–7 | date = June 2011 | pmid = 21123262 | pmc = 3097836 | doi = 10.1098/rspb.2010.2189 }}</ref>