No plucking, luckily.

I felt around their feathers and there are pin feathers (I think that's what they are?) coming in. The feathers just kind-of fall out when they move, or are preening. I'm not sure if it is a hard moult for them, as this is their first one.
They were really scruffy when I got home - White down feathers sticking out everywhere, yellowish feathers sticking out, and some patchy spots. Turns out they just hadn't had a bath in the month that I was gone ;) Now they look almost normal - still a little scruffy, but I assume that is just from the moult.
Have fun on your trip. ^^