My Speckled Hamburg stopped laying . She is a great producer and she stopped laying once before when I farmed her out to a friend to fix the henyard. Now I have introduced 3 pullets (2 months old) and a red heat lamp into the coop. She seems comfortable around the new birds (she's bossing them around) and she is upset to be not near them. Do you think the heat lamp is confusing her or is she upset with the new birds?