Celtic Heroes

I've seen where quest and other websites say Boggans drop bones but there are several types of Boggans.

Somehow I got a Lesser bone (I don't know which mob dropped it lol).

If someone can please direct me a little better as to which Boggan drop Minor, Lesser, etc. bones I would greatly appreciate it. The Tunels have tons of Boggans and I keep dying lol.

All boggans drop them

All boggans drop them, but the higher lvl ones drop the higher tier bones more frequently.
Why is this in the Druid forum, though? This applies to all classes