I have a White Rock that seems to be a bit sleepy... she is still very active, eating well (she is the aggressive one during feeding time), pooping well. She will just be standing there and all of a sudden "drift off"- sometimes sitting, sometimes standing (on one or two legs). Is this normal? Her vent looks clean, Her feathers are nice and glossy, her eyes look clean, no nasal discharge, no worms. Am I worrying too much?