The headdress can store up to 150 scrolls. This will only work with combat-oriented scrolls. You can remove the scrolls at any time by right-clicking on it and selecting 'Uncharge'. To check how many charges are remaining, right-click the headdress and select 'Commune'.
When charged the headband part of the headdress changes to a bright cyan colour and the rest of it is left unchanged.
The chathead for a charged blue feather headdress on female characters is glitched and looks completely different from the other headdresses, instead resembling an ogre expert hat.