One of our pullets walks backwards funny only after she is packed with dirt from a dirt bath. She's getting close to laying. My mom doesn't want her eggs, I'm willing to take the risk, if there is any. I washed the first egg I ate from our chickens, but then decided not to wash the second I ate, then left every egg after unwashed. I'm still fine. Back to the topic, Sophie only walks backwards when full of dirt, she's fine the rest of the time. She walks like this.