I have 5 dark Brahmas. They are 8 months old and still not laying. They were born in June of 2017. I know they are a slow maturing bird but I read that they should start laying around 28 weeks, which would have been mid to late December. Not sure if it has something to do with the season. We are in south Florida so we don't have a big change in seasons. Any thoughts or advice would be appreciated!