I have a Rhode Island Red that I think is getting ready to start laying. She has just started to explore the nest boxes and is scratching around and sitting in them. She is almost 5 months old. She is being very vocal today and not letting any of the other hens in the coop with her, however at one point both my roosters were allowed in. She began following them around and pecking at their toes. When they stood still she would crawl between their legs like she was trying to get them to mate with her. IS THIS NORMAL???