silkies not laying

Can anybody give me some advice, got 3 silkie hens 1 silkie cockerel, they have not laid any eggs since the end of May, they seem to be malting could this be the reason.
If not can anybody give me any clues.
Thanks for your advice really appreciate it

All their energy will be going into producing new feathers instead of eggs. You can give them a small amount of fish flavoured cat food for extra protein, they will love it.