Why are my rhode island reds only laying tiny eggs, and double yokes?

[SilkieSanctuary]

My two rhode island red hens started laying a little over two weeks ago. I am usually getting two eggs a day from them, but they are either very small or double yokes. I have yet to get a normal egg from them. They are not fairy eggs because they have a yoke. I feed them a 17% protein layer feed, oyster shells, and treats. My treats are usually fruits, vegetables, and meal worms. I raise sillkies and wanted to have some good egg layers, but their eggs are the same size, if not smaller than my silkies! Could this be because of the lack of sunlight in the winter? Does anyone know the cause of this? Is there anything I can do to help or fix this?

 

[Ol Grey Mare]

This is common in new layers -- with time their systems will regulate and adjust to production, egg size will increase and the double yolks will decrease.

 

[aart]

Pullet eggs are small when they first start laying...bigger ones are usually double yolkers.
It can take weeks...or months....for them to get up to a 'Large' size.