Trying to solve a mystery...who's laying?

[Lochloosachicks]

I just got my first egg on Tuesday evening. I didn't find the second until last night, but found a third today! This means I have to have at least 2 laying right?

My oldest girls are 2 Speckled Sussex and 2 Light Brahma. I assumed the Sussex, but the egg colors are a little different. They are all 22 weeks.

My next oldest birds are araucanas and amberlinks at 18 weeks. I'm attaching pics of the eggs. The lightest egg is the most recent one I found today.
I assume it's 2 of the oldest laying. Could a Brahma lay this early? I heard they were late layers.

They are all so tiny! So much fun though, it's like Easter every day!

 

[PD-Riverman]

Which hens have the most red comb??? Probably the guilty ones, or you can just keep checking the nesting boxes every little while and catch them in the act.

 

[Lochloosachicks]

Which hens have the most red comb??? Probably the guilty ones, or you can just keep checking the nesting boxes every little while and catch them in the act.

That's what I've been trying to do. I'm pretty much stalking them. One of the Brahmas comb is darker red than the other and one of the Sussex has a comb darker than the other. Does the difference in egg color mean anything?

 

[aart]

This works really good for IDing pullets who are laying:

Vent Appearance:
Dry, tight, and smaller - usually not laying.
Moist, wide, and larger - usually laying.

Pelvic Points, feel for the 2 bony points(pelvic bones F-F) on either side of vent:
Less than 2 fingertip widths apart usually means not laying.
More than 2 fingertip widths apart usually means laying.
(Spacing is relative with chickens size and humans finger size.)