Hi
I think she is around 20/21 weeks and she is a hybrid. I have 2 other hybrids but they are about 19 weeks now so may have a few more weeks for them to catch up, saying that one is looking decidedly red around the face even though she doesn't have a very big comb.
The signs for the one laying now were...comb getting bigger and wattles getting bigger and both redder. She also started doing that crouching thing too.
She layed again today too and this time in the nesting box so we could collect it, it was a huge 45g
I think we may have to save them up for a few days till we can make an omlette
Hope you get some luck with your little pekins soon, they are cute little things