▁pred ation . ▁For ▁example , ▁the ▁orn ate ▁tail ▁of ▁a ▁pe ac ock ▁makes ▁it ▁more ▁difficult ▁to ▁hide ▁and ▁it ▁also ▁imp edes ▁flight . ▁There ▁are ▁also ▁different ▁sexual ▁phen ot ypes ▁which ▁may ▁change ▁the ▁method ▁of ▁attempted ▁cop ulation . ▁ ▁There ▁may ▁be ▁several ▁male ▁re product ive ▁phen ot ypes ▁within ▁a ▁species ▁and ▁the ▁phen ot ype ▁that ▁is ▁manifest ▁may ▁be ▁determined ▁by ▁a ▁number ▁of ▁factors . ▁For ▁example , ▁some ▁phen ot ypes ▁may ▁employ ▁a ▁more ▁ag gress ive ▁and ▁direct ▁m ating ▁t actic ▁while ▁other ▁phen ot ypes ▁may ▁use ▁less ▁traditional ▁methods , ▁as ▁is ▁the ▁case ▁with ▁bl u eg ill ▁sun fish , ▁where ▁males ▁use ▁a ▁“ s ne aking ” ▁t actic ▁to ▁find ▁m ating ▁opportun ities . ▁  Pre vious ▁research ▁has ▁shown ▁a ▁great ▁pl astic ity ▁in ▁sexual ▁signals ▁based ▁on ▁conditional ▁qual ities ▁such ▁as ▁food ▁avail ability , ▁body ▁condition , ▁environmental ▁conditions , ▁population ▁dynamics , ▁and ▁sexual ▁displays . ▁Cond ition ▁dependent ▁signal ing ▁is ▁an ▁important ▁part ▁of ▁sexual ▁selection ▁theory . ▁ ▁For ▁example , ▁if ▁an ▁organ ism ▁under ▁selection ▁where ▁the ▁sexual ▁signals ▁will ▁not ▁be ▁as ▁effective ▁or ▁they ▁are ▁in ▁an ▁environment ▁lack ing ▁in ▁energy , ▁they ▁may ▁allocate ▁less ▁energy ▁toward ▁sexual ▁selection . ▁Cond ition ▁dependent ▁signal ing ▁research ▁see ks ▁to ▁understand ▁the ▁true ▁pl astic ity ▁of ▁sexual ▁tra its ▁and ▁determine ▁if ▁they