Hey, I whistle!!!!
Slifer was a true hermaphrodite, so she was both sexes...Most times that you get a crowing hen is because she's gotten an infection in her main ovary which shuts down. Since she's not getting female hormones the male hormones take over and she starts showing the male sexual characteristics like sickle feathers in her tail, large and red comb and wattles, pointed hackle and saddle feathers, spurs, and last but not least crowing. She probably WON'T lay again. But she won't be able to fertilize eggs because she won't be genetically a male, just look and act like one.
Slifer laid me one baby yellow egg in the 3+ years that I had her and that was because I put her on female hormones, homeopathically.