Foggy weather and egg production

[Draya]

Does fog have an effect on your hens’ egg production? I know that daylight hours matter but we are getting lots of fog here in the Sacramento Valley and it seems like my girls lay fewer eggs on foggy days compared to sunny ones. This picture was at 11 AM and it is light outside but no direct sunlight. Does it make a difference?

 

[nuthatched]

Light levels and daylight length are the biggest factors of productivity

 

[Ridgerunner]

There are different triggers that cause a hen to release a yolk to start the internal egg-making process. Some of those triggers are related to light. I've heard it does not take a lot of light, enough to read a newspaper by, so I'm not sure fog would interfere with that.

Even if it did, fog would not affect that day's egg. It takes around 25 hours from when a hen releasees a yolk to start that process so even if fog had an effect, it would be the next day, not the day of the fog.

 

[Draya]

There are different triggers that cause a hen to release a yolk to start the internal egg-making process. Some of those triggers are related to light. I've heard it does not take a lot of light, enough to read a newspaper by, so I'm not sure fog would interfere with that.

Even if it did, fog would not affect that day's egg. It takes around 25 hours from when a hen releasees a yolk to start that process so even if fog had an effect, it would be the next day, not the day of the fog.

Interesting about reading a newspaper because it is certainly light enough for that.
I was curious because we have had stretches of fog that lasted days in a row, not just one day or for a few hours.

 

[Ridgerunner]

I'd suspect the shorter days of winter is more likely to cause them laying a bit less than fog. But I haven't seen any studies on how fog would affect them.