Harold and Imelda were just not getting along anymore. Particularly in the morning. Every little thing would set one of them off. Neither would relent, doing so would relinquish power and they both needed to "save face". So, the morning squabbles continued until they eventually tired and had breakfast. The meal of grubs was delicious to them and seemed to calm the atmosphere between them. Food is a great pacifier; that's why there's so many overweight birds in the colony.