help sexing these chicks?

[J0shGoodrich]

Hey guys these chicks are 1 week old now and i’ve sexed most of them to be hens (wing feathers extending all the way across their body and feathers 2 different sizes) but 3 of the chicks wings aren’t extending across their body, but their feathers are still 2 different sizes. are these roosters?

 

[J0shGoodrich]

also is this method of sexing chicks accurate? found it on youtube

 

[nuthatched]

It isn't accurate. Some old timers can do it with some accuracy bit it's a learned skill and usually hogwash