This time WAR90/THF45. Made sure to get TH on every mob by hitting them directly.

THX
Lesser Colibri
Name Drop rate Drop rate (%)
Colibri Beak 69/157 43.9%
Colibri Feather 97/157 61.8%

Just a small sample again, but as before, it falls very close within Thorny's reported stats, a bit higher on feathers, a bit lower on beaks. Assuming all items receive the same boost from TH (which isn't even proven yet, but I'll assume that's the case for "common" items, or non-NM drops), it evens out nicely to his reported drop rate.

I'll do TH3~ next.