I have a RIR roo, Silver Phoenix roo, Red & Black Sexlink hen & a Black Jersey Giant hen. My girls are 7 months (RBS) & 9 months (BJG). I brought them some corn to their coop earlier after they roosted. Both girls came to scratch & the RBS started stomping her feet & pointed her right wing down & dancing & cackling like the roos do. Neither has layed yet either. What does that dance mean & what signs do I look for to let me know they're getting ready to lay?