Hi all! I have two 3 week old Silkies who are eating and drinking and chipper and growing like weeds! I have noticed the last few days that they are shaking their heads quite a bit- more so than any of the other chicks i’ve had. No signs of any illness... poops are normal, they’re alert, no excessive sneezing and no wheezing. Could this be from their feathers coming in on their head or should I take action? I rubbed some VetRx on their beaks but wondering if I need to do more?