Perfectly normal hens stop laying?!

[raro]

Hi there,
I have four red sex-links and they have been each laying one egg a day since I got them at 20 weeks last summer. All through the winter, I got four eggs per day. Then, a few weeks ago, I got three eggs. No problem, but for about 3 weeks straight, it's been exactly three eggs, no more, no less. Then 2 days ago, it was 2 eggs. And yesterday, 2 eggs.

They aren't in any kind of distress, and nothing has changed. They aren't broody or molting. I haven't changed their feed, environment, anything. They are enclosed in a large run, so I'm pretty sure there aren't any snakes or whatnot to steal them. Does anyone have a clue what could be going on?!?!

I can't tell if one (or, now, two) of them have completely stopped, or if they're "taking turns" not laying. ?!?!?

 

[CrestedGirl]

When was the last time you wormed your chickens? Have you dusted them it all for external parasites? Worms and mites can cause egg production to drop.

 

[cottage19]

Are they getting any free-range time? I have 7 red sex-links (same age as yours). Nicer weather has set them free and I am finding eggs in weird places - this morning my favorite hen squatted in the driveway and dropped an egg! I believe they are having so much fun roaming that they don't want to be bothered coming back to the nests...