I have 4 Chickens, 2 Leghorns and 2 Isa Browns. They are all about 7 - 8 months old. A few weeks ago they were laying every day, for some reason they stopped laying for about 3 weeks now, I have no idea what's wrong, they've all been eating, drinking and running around and they look perfectly healthy. I'm just looking for some advice. I've also seen a few lice on one of my leghorns but not the others, could that be the case?
and welcome to BYC! Where in this world are you located? If you are in the Northern Hemisphere, you are probably suffering from what the rest of us are - short daylight hours. The only cure for it is pretty much waiting for the earth to tip on its axis and give us the Winter Solstice, resulting in longer days. In a few weeks your hens should get back to the business of laying eggs again! Good luck!