SCLATER’S WHISTLER Pachycephala soror

Modestly common above 1,570 m, from the understorey to the canopy. Sings mainly at dawn.ȱ Allȱ songsȱ areȱ aȱ simpleȱ patternȱ ofȱ aȱ half-dozenȱ whistledȱ notesȱ andȱ slurs,ȱ butȱ eachȱ renditionȱ differsȱ fromȱ theȱ previousȱ one.ȱ Despiteȱ theȱ absenceȱ inȱ theȱAdelbertsȱ ofȱ itsȱ usualȱ hill-forest congener Rusty Whistler P. hyperythra, the Adelbert population of P. soror does not expand its elevational range downslope.