Xt660R Coolant level drops

[46&2]

Hi guys, I noticed that my xt660r's coolant level drops from full to min in about 2 months.

Is this normal or does this indicate that there is something wrong with the bike?

 

[Eisbein]

 

[Buzzlightyear]

 

[Eisbein]

 

[Jakes Louw]

 

[46&2]

 

[46&2]