My oldest girls are 2 Wyandotte/Partridge Rock mixes, one golden laced and the other buff laced in color. Last year when they were 15, after not having laid a single egg in more than 8 years they both decided quite stubbornly they were going to brood and nothing I could do would dissuade them. So of course I caved and gave them each six fertile eggs. And brood they did, successfully hatching out six chicks each. Being old and crotchety with a little arthritis and some balance issues, they sometimes had a hard time keeping up with their chicks and sometimes their patience seemed a little short but they did a great job as moms. The chicks very quickly learned to adapt to mom's disabilities and everyone did well. They definitely "weened" their chicks much, much earlier than my younger hens though. The most amazing thing happened after they kicked their kids to independence - they began laying again! I got one egg every day for about 8 days then they went back into retirement. They turned 16 on March 2 of this year and to celebrate they each laid an egg a day for 4 days..... at 16!!!!!