Legislação -
http://www.lueders-photoworks.de/en/astrid/text/gallery/animals/index.html
http://www.ciaopet.com/schedaRazza.asp?ID=171&Categoria=Uccelli#
http://www.infomascota.com/articulos/generales/aves/2003/11/27/mina_himalaya_1/index.asp
http://www.wildsingapore.com/chekjawa/text/f222.htm
http://journals.cambridge.org/action/displayAbstract;jsessionid=087BB49D965ECBEED22E5A5241CDC2B7.tomcat1?fromPage=online&aid=412465