egg size fluctuations

[chicken stir fry]

When I was a kid, my grandfather used to raise rhode island red chickens and we'd get large size eggs consistently from his hens when they were about a year or older. About 2 years ago, I started raising rhode island red chickens, but I notice that sometimes they will lay large eggs one day and medium to small sizes at other times. They get the same amount of food daily and clean water everyday. So, my question is why is this occuring?

 

[schmije]

I'm not sure about the 'why', but I know it's not unusual for the egg size to vary. Do you ever get double yolkers? I've had one or two. It seems that some hens tend to have more of them than others. We see small eggs sometimes too. Usually it's when a hen starts laying again after winter or a molt, but sometimes we don't know why. The weather and amount of daylight could have something to do with it.