They just have nothing for spurs for 10 month olds though and no crowing.... My 7 monthers already have 2-3 spurs at 3/8ths inch.
I know what you mean, which also backs up my theory of them being Langshans. They are a very slow maturing breed. Same as in Brahmas and English Orpingtons, mine aren't full grow until they are around two years old.