eth r ush ▁( Coll ur ic inc la ▁fort is ) ▁is ▁a ▁species ▁of ▁bird ▁in ▁the ▁family ▁P ach y ce phal idae . ▁ ▁Tax onomy ▁and ▁system at ics ▁This ▁species ▁was ▁formerly ▁considered ▁a ▁cons pec ific ▁member ▁of ▁the ▁little ▁sh rik eth r ush ▁complex . ▁Gen etic ▁investig ations ▁of ▁New ▁Guinea ▁populations ▁of ▁the ▁little ▁sh rik eth r ush ▁indicate ▁high ▁levels ▁of ▁gen etic ▁diver gence , ▁suggesting ▁it ▁compr ised ▁more ▁than ▁one ▁species . ▁ ▁Sub species ▁Currently , ▁three ▁sub species ▁are ▁recognized : ▁ ▁C . ▁f . ▁des pect a ▁- ▁( R oth sch ild ▁& ▁Har ter t , ▁ 1 9 0 3 ): ▁Found ▁on ▁southern ▁coast ▁of ▁south - e astern ▁New ▁Guinea ▁ ▁C . ▁f . ▁fort is ▁- ▁( G adow , ▁ 1 8 8 3 ): ▁Origin ally ▁described ▁as ▁a ▁separate ▁species ▁in ▁the ▁genus ▁P ach y ce ph ala . ▁Found ▁on ▁D ' Ent rec aste aux ▁Arch ip el ago ▁( off ▁sout he astern ▁New ▁Guinea ) ▁ ▁C . ▁f . ▁tro b ri and i ▁- ▁( H arter t , ▁ 1 8 9 6 ): ▁Found ▁on ▁Tro b ri and ▁Islands ▁ ▁Distribution ▁and ▁habitat ▁It ▁is ▁found ▁in ▁New ▁Guinea . ▁Its ▁natural ▁habit ats ▁are ▁subt rop ical ▁or ▁tropical ▁mo ist ▁low land ▁for ests ▁and ▁subt rop ical ▁or ▁tropical ▁mo