A few chicken/egg questions

[Teeki]

In relation to your other questions (lol), I really don't know!

Hehe if someone has answers for those questions I'll be impressed! Is it possible for one chicken to lay two eggs in a day?

[Livinthedream]

Chickens carry about 8 eggs in various stages of development at any one time.
She can have sex and still lay fertile eggs up to 10 days later.
This sounds really macabre, but if you autopsy a laying hen who is currently laying, you will actually see all the eggs in different sizes, (well yolks, the shells go on very last, like in the last 24 hrs)
As to weather she is born with her full egg laying quota, i would think so, she has ovaries, and follicles like us.
Also, that would explain why different breeds are better or worse layers, even when kept in the same conditions.
Chickens who lay less tend to live longer too, the power layers like the Isa Brown types tend to burn out and die of reproductive issues after a couple of years.
And yes, your 2 hens are laying in the same box, possibly even at the same time! I have a "favorite" box and often find 2 girls in there at once with a third pacing out the front trying to cross her legs waiting to get in.!

[Teeki]

Well there you go! Thanks Livinthedream, now I can't wait for DH to get home so I can tell him all about it lol.

I think we have Isa Browns, they're just your standard red chook. I can't imagine them both in the same box! I've seen them in there at night, one in each box and they take up all the space so two in one would be tight lol.

I'm pretty amazed at them having up to 8 eggs on the go at once. I guess when they stop laying for a bit they just halt production for a while.