King Of Their Domain

Next to the club house and pool area where we live, there is a boat ramp.
I found this duck making claim to his own small domain next to that boat ramp.
I think that the sign originally said "king of ramp" or maybe it said "duck of ramp"...hmmm...I wonder if that might be anything like "rack of lamb"...inquiring minds want to know.
Everyone needs to be able to claim and rule their own personal domain...no matter how big or small that domain might be.