I am a beginner of chicken keeping. I am from Sydney Australia, here is summer and my Australorp Heritage breeds are about 1.5 years old. They stop laying all summer this year and brooding and molting. I can think of the reason could be,,,, wet summer ? too much rain ? next door is renovating their house for a year, rats infestation ( resolved by poisoning ), they don't eat the pellets at all so I have to feed them with whole and cracked grains.