I have 4 girls, 3 are about 2yrs. old, 1 about 6. One of the 2 yr olds, a submissive barred rock, was crazy to be let out of the pen this morning (they always crowd the gate when it's time but she had been pacing back and forth frantically). When they came out the other 3 did their usual thing and she ran to a hidden spot under some brush. I followed her and found her sitting on a nest with 2 eggs in it. I picked her up and put her, with the eggs, in the nest box but in a couple of min. she ran back out to her nest. In threads I looked up before writing, advice was to lock them in the pen for a few days but these aren't pullets and we were away last weekend for 4 days and they were in the pen the whole time. Could she be responding to bullying? we have 2 nestboxes in a roomy henhouse and pen. thanks.