How will I know who laid which egg? Is there a difference in egg

From what I've seen in my buff orpington hens, color can vary even from hen to hen.

So if you want to know who laid what, you need a trap nest.

I also have wyandottes - SL & GL & BLR- but mine are only 9 wks old!

I was lucky to get some blue orpington chicks, which turned out to be from cream, lavender, blue, splash, & black. They are 5 wks old & I am very excited to see which ones will be pullets - for sure the cream & lavender are.

 

There's a wide range of colors even within the same breed. I have all brahmas and get everything from a dark brown to a pink.
Henderson's Chicken Chart may help you narrow it down a bit:

http://www.ithaca.edu/staff/jhenderson/chooks/chooks.html



OT - A question for meezermom. Does your user i.d. mean what I think it does and you are owned by some siamese?
I terribly miss my meezers lost a few years ago and have been looking for a couple of rescues with no luck.

 

I have 10 laying hens and I can tell exactly which egg was laid by which chicken. Color is a big help, but in a couple instances where it's hard to differentiate, I can tell by which nestbox the egg was laid (my chickens always use the same box as they did the day before). Thankfully, my 2 leghorns do not lay in the same nest and either do the 2 barred rocks - that makes it easy.

I have 3 types of brown egg layers - the barred rocks are the lightest - there's still a variation, but the shape of their eggs is different than the eggs of our production red (medium brown) and the 2 barnevelders (darker brown).