Did they do this in the house ? .... I put an inverted cardboard box in their giant new brooder in case they felt too exposed in their new home, and they are all huddled under it. Every time I go into the garage, they start screaming and trying to climb over each other to get farther back in the box, otherwise they are quiet,
and I'm sure they will emerge eventually.... But the impatience..... THE IMPATIENCE!!!!!
They could be a little traumatized by the move
I am thinking they are scared ...
You make a different sound in the garage ? maybe it is echoing ?
they hear something coming but they dont know what so the are trying to hide ...
...You could move the box the other way so they can see you ...or talk as you come in or take it out if they dont need it