I remember reading somewhere on this forum that RIR can be sexed by looking at the back of their heads. If they have a black line on the back of their heads, then they're females. I'm not sure how fool proof this method is, but give it a try and let me know how it works! I have 2 RIR with black lines on the back of their heads, so I'm hoping they'll turn out to be pullets.
As for the other two breeds, your guesses are probably as good as mine. Especially for the BRs, since I have never had BRs before. Leghorns can probably be sexed from the size of their combs, but that can be quite unreliable at such a young age.
That's great information on the BR's speckledhen. I have several pullets, supposedly, that of course I am wondering about. What a great forum this is. Thank you!
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I'm sure hope this isn't tru because if it is I only have 4 pullets
Did you buy straight runs or sexed chicks? I'm not sure how reliable that method is, but I'm trying it out myself... Guess we'll just have to wait and see.