Editing Trogon (section)

===Calls===
The [[bird vocalization|calls]] of trogons are generally loud and uncomplex, consisting of monosyllabic hoots and whistles delivered in varying patterns and sequences.<ref name ="HBW"/> The calls of the quetzals and the two Caribbean genera are the most complex. Among the Asian genera the [[Sumatra]]n trogon (''Apalharpactes'') has the most atypical call of any trogon, research has not yet established whether the closely related Javan trogon has a similar call.<ref name ="Collar 2002"/> The calls of the other Asian genus, ''Harpactes'', are remarkably uniform. In addition to the territorial and breeding calls given by males and females during the breeding seasons, trogons have been recorded as having aggression calls given by competing males and alarm calls.