Each of the birds are developing different habits. #1 will steal all food if you let him. #2 has worked out that if he leaps onto the food stick, it will sag to the floor and the targeted sibling will be denied food - and he can eat it. #4 will only eat food no larger than a pea, and #3 will only eat food if I roll it into a wormy shape first.#1, 2 and 3 will all pick up food from the dish but I have to stop them getting so excited they jump in feet first and stamp it into mush.
They have almost out-grown the current cage. Time to transfer them to the next largest size, which means they can no longer come to work with me.