With Swedish Flower hen, the cockerels in the time frame are the first to grow there combs and turn dark pink to red, it's very apparent. The pullets show there comb size in 30 weeks but during there growth it remains pale yellow to pale pink and small. The cockerels will attempt to crow at 25 to 30 weeks. So you will have time to figure who's who before they crow. So you can remove or keep it.
Don’t know if this helps but my SFH chicks are now 6 weeks and I just noticed some major behavior shifts in one and in the same one the comb is turning red at the base and waddles started appearing and red like overnight haha. The bossy/checking on everyone behavior started around 5 weeks. Here’s some photos. I think I have the reverse of you a black and white pullet and red and white cockerel. Tail feathers suddenly got longer than my other six chicks too but I have a little mixed flock growing.
Oh yeah, there a big difference in combs and now the waddle in yours! So do you feel basically 100% your red and white is a cockerel? Mine are 5 weeks today, so I’ll keep an eye out for waddle development! But mine have 2 very different personalities too. My little red one is at the very bottom of the pecking order and as soon as I go out to the run, she’s jumping on my lap and cuddling me. She’s super sweet! And then my black and white is squaring up with the other chicks constantly, especially the ones I suspect are cockerels. And I have 12 chicks from 5-9 weeks and these two are my youngest!
Lol it sounds like you just described mine except the colors are literally swapped for me from yours! Yeah I’m pretty positive. I’m pretty new at this but compared to my 8 week old white leghorn (who supposedly mature quickly especially compared to the SFH) I definitely think I have a cockerel SFH and a pullet LH. I really love them all but my little black and white SFH suspected pullet is super cuddly and sweet still like your red and white. My red and white will still cuddle but he’s definitely more feisty than 3 weeks ago. He used to super enjoy cuddles then now I have to convince him more because he acts like he’s got a job already!
Aww I definitely think he’s a he! He’s super cute! Here are updates of my two. They are 7 weeks old. My little dude is going to be crested. He has started jumping and snuggling in my lap again.
Sooo cute! Ahh, I love these birds! Your pullet still has NO comb tho and mine does! It’s significantly smaller than my cockerels, but it’s there and red. I hope that doesn’t mean she’s a slow developing cockerel!Aww I definitely think he’s a he! He’s super cute! Here are updates of my two. They are 7 weeks old. My little dude is going to be crested. He has started jumping and snuggling in my lap again.
And after looking at yours, I’m thinking I might have a fast and a slow developing cockerel.Aww I definitely think he’s a he! He’s super cute! Here are updates of my two. They are 7 weeks old. My little dude is going to be crested. He has started jumping and snuggling in my lap again.
Oh no! Yeah it’s suspicious looking but maybe my gal is just super slow. They are such cuties though! Aw I’m sorry. I wouldn’t worry just yet. But I’m new to them too. I so far love the breed though.And after looking at yours, I’m thinking I might have a fast and a slow developing cockerel.
breeder had some obvious boys so she felt by comparison these were very likely pullets. 
Any thoughts? Hens?
