Can sex be determined by size?

[Y N dottes]

Okay, so I have 3 California white chicks about 4 weeks old, and one of them is significantly bigger and more feathered than the others. does this mean it is more likely to be a roo?
Just wondering if this is in any way an accurate way to determine gender. also, the comb on the bigger one is NOT any bigger than the other's

 

[ChickensAreSweet]

No in my opinion. I raised some Cali Whites once and I was simply amazed at how fast they grew large and how quickly they feathered in!

 

[Y N dottes]

alright, thanks. I figured this was the case, but I thought it was strange that there should be different growth rates within the same breed

 

[ChickensAreSweet]

alright, thanks. I figured this was the case, but I thought it was strange that there should be different growth rates within the same breed

Yes I saw some grow faster than the others too in that batch of Cali Whites I had. But maybe you do have a little cockerel there...it is certainly possible!

I have seen lots of chicks in other breeds grow at different rates as well. I think it has to do with how much pasty butt they have at the beginning in my flock. I clean it off every day but I think it sets them back anyway. This is my theory anyway.