From the pictures it's almost impossible to tell you what's going on. The second picture shows a hole the drain elbow for the coolant reservoir (expansion tank) cap, which could have sprayed coolant onto the bottom rad hose union you've circled in the first picture.
It's unlikely it's been leaking from the hose union as there's no discolouration I would expect to see on a leaking hose union. My money is on the water pump, collapsed rad core or a leak somewhere in the system, which has caused the bike to over heat and dump water into the expansion tank.
You need to get the pump, rad and system leak checked.
It's unlikely it's been leaking from the hose union as there's no discolouration I would expect to see on a leaking hose union. My money is on the water pump, collapsed rad core or a leak somewhere in the system, which has caused the bike to over heat and dump water into the expansion tank.
You need to get the pump, rad and system leak checked.
Later