sex change at 4 months

[2overeasy]

Hi,
I bought some chicks from mypetchicken at the beginning of April. Amongst others (a total of 25 chicks of various breeds), I had 4 BO and 4 BR. At approx 2-3 months I saw that I had 1 very distinctive BO roo and 3 distinctive pullets. Exact same with BR. Very noticeable difference in each. Now at 4 1/2 months, I still have a for sure BR roo and BO roo. However, 1 of the BR pullets has a comb and wattles than have gotten much redder and larger, but still doesn't look quite like the very distinctive BR roo. Also, 1 of the BO pullets has developed the same way, becoming different than the other 2 that are obviously pullets.
I read in the forum and the link provided for feathersite.com about chickens of older ages changing gender, but all of the circumstances seemed to go with having a flock of only hens, and 1 becoming more male-like to become the flock protector. My situation is different, however, because there were already 4 roos in the flock (now, apparently 6, although I'm still not sure about the splash andalusian).
Any ideas, please?
Thanks,
Shawn
Learning something new every day!

 

[PhlyinPheBee]

Quote:
Some pullets will start getting a bigger and redder comb and wattles when they are getting close to laying. Maybe that is what yours are doing. Pics will help lots to get a better id.

 

[oesdog]

Quote:
I have also learned that if the pullets overies are damaged they can change gender !!!!!!! Yeah really they can go from hen to roo but not the other way round. I watched a very interesting TV documentry about chickens one night which was really informative and went right back to when they were all wild and they had a woman on with a Hen that went Roo.

Oesdog -

Maybe she is just challenging the Roos though????

 

[featherz]

Post pics. Do they have pointed hackle and saddle feathers? Mine are about the same age (17 1/2 weeks) and they almost all have big combs and wattles but they are all pullets, getting ready to lay. One is lagging behind and is still a light pink, but I have no doubt that the rest are pullets.

I'm even getting the egg squat so hopefully it will be soon.

 

[FireTigeris]

because the way bird's sex chromosomes are all birds are male unless they have the gene that causes them to be female-

however these who don't have enough hormones or there is no flock roo, one will look more roo and act more roo but never be fertile

 

[sourland]

Hard to say without a picture, but sounds like pullets that are maturing faster than their flockmates.

 

[silkiechicken]

got pics?

At 4.5 months, that is about time when female hormones kick in and start to make for a mature laying hen. She's probably going to be the first to lay.

 

[2overeasy]

Oh, I did not know that about color changed as it relates to approaching point of lay. Interesting. I will, however, go home this evening and take pics and post them.
Thanks so much to all!