[accidentallfact]

Mood and evidentuality are two somewhat distinct concepts.

Mood denotes the informations factuality, if something is, could be, would be, certainly is so, or there may be moods for direct or indirect commands (tell him to come) and so on.

Evidentiality denotes how the speaker knows - you use different evidentiality if you have directly seen something, if somebody told you, or if you deduced it.

Then there is mirativity, which denotes how expected or unexpecred the information was.

I believe that turkish has all tree.

[Twey]

Oh you're right! I always thought evidentiality was a dedicated Turkish mood — but it's actually a particular use of a tense. TIL :)