hello all, so my little beauties turned 14 weeks yesterday and this morning i heard what i can only find on youtube as the egg song from the black marran and light sussex mix. when i went to see what this noise was she was strutting around proud making the noise then stopped and went about her business eating and carrying on as normal. my question is could this be practice? or could it also indicate an illness?? very new to keeping chickens and have no idea what to make of this!!