Hens became roosters (?)

[EllaTheQueen6]

Hi. Several months ago I took in 4 australorp chicks, when they were around visual sexing age it looked like we had 2 roosters and two hens.
They're maybe 4 months old now, about a month ago one of the "hens" just became a rooster? And then just the other day, I woke up and my very last hen was a rooster.
Yes I'm working on getting rid of the roosters, but the point is, at 4 months old how does this happen? They were supposed to be definable a long time ago, and both of them just changed overnight.
I'm just curious about it.

 

[SilverBirds]

They just developed slower than their brothers.

 

[FrostRanger]

Do you have pictures of the birds?

 

[EllaTheQueen6]

Do you have pictures of the birds?

No, not a recent picture, but their tails are long and high like a roosters and one has a comb and waddle to match, don't know if the recent one will get the bigger comb and waddle though

 

[Airyaman]

Decided? Are we talking a couple of trans roosters?

 

[FrostRanger]

No, not a recent picture, but their tails are long and high like a roosters and one has a comb and waddle to match, don't know if the recent one will get the bigger comb and waddle though

Females have combs and wattles too and especially around this age their combs and wattles will get bigger, main thing to look at at that age is whether their saddle and hackle feathers are pointed or rounded. If you can take some pictures of the birds that would be helpful

 

[jbj25]

Yes, post pictures of all 4 and lets see what you have

 

[WingItRanch]

Hi. Are these the same "hens" you're talking about?
https://www.backyardchickens.com/threads/pullets-have-pale-ish-face.1669211/

I found your previous post and both of these birds have male-specific pointy hackle feathers. It was clear at this age that they were cockerels.