Completly normal behavior.
A bp's mood and the amount of activity they are showing arecan be 2 completly differnt things. There are many differnt reasons as to why they might be more active some days then others. Example: if they are colder they might move around less. On feeding days some bps might get more active once they smell the rodent. Some people might argue that their "mood" is them becoming hungry but really it is just their instinct kicking in not a mood change.