I have 4 Silver Laced Wyandottes and they didn't start laying at as early an age as the Buff Orpington and the Rhode Island Red, who began about 2 weeks of age earlier, but they are coming into bloom as layers now at age 6 months one week. One has been laying every day in the nest box and no broodiness, and it appears that the others are starting. Temperamentally I like them because they don't do the loud croaking which my top hen, a LIght Brahma, as well as my Rhode Island Red have gotten into, which I worry will annoy neighbors. The Wyandottes seem quieter overall.
I agree. We have SLW and GLW as well and they are excellent layers. Not quite a year. Next month they will be. But they just lay the most beautiful eggs(sometimes almost pink!) and good sized. one from each almost every day. One or two will take a break at a time but we are so pleased with them. Got them at McMurray.
And fiddleblue, they did start laying a bit later but it was worth it.