Submitted bug "[Item Bug] Sinjian's Bardic Requsites, an aging Halfling woodcarver" to play.net's bug tracking database under category "Item" with these details:
"'Whoah!!' The Halfling woodcarver stops you as you go to hand him the stick. 'That is TOO large for something like a whistle. Go find me a smaller one.';foraged rosewood stick no longer works with woodcarver to make bird ocarinas."

Cuz ya know, you start a new bard you want a bird instrument.
Also tried, pine, elm, and bamboo. Was hopeful to have a bamboo instrument. :)

You get a bamboo stick from inside your miner's backpack.
give woodcarver
"Whoah!!" The Halfling woodcarver stops you as you go to hand him the stick. "That is TOO large for something like a whistle. Go find me a smaller one."