Sexing 10 day old chicks by wing & tail feather development?

[HennyPenny44]

I hatched out 6 Speckled Sussexes and 2 Lavender Orpingtons recently. I tried the wing feather sexing on day 2/3 and presumed I have one one LO girl, one LO boy and at least 4 SS girls (they were all running around and I lost track of who was who).

It’s day 10/11 and I’m seeing some major differences between chicks in the same breed. One of my LO chicks has longer looking wings with a lot of feathers and some tail feathers developing. The other has short, rounded, sparsely feathered wings with no tail feather development...mostly fluff. I want to presume the first is a girl and the second a boy. As for my SS, 5 have the same type of feather development as the first LO chick I think is a girl and only 1 has the short wings and no tail feathers I think comes with a boy. That would mean I have 6 girls and 2 boys which seems unlikely. But who knows?

Has anyone tried sexing chicks this way this early and did it work? I found info on this sexing technique here although they’re sexing Cochins and it supposedly only applies to certain varieties of Cochins. https://hanburyhouse.com/2013/07/23...cks-from-female-chicks-in-1-week-old-cochins/

Here’s some photos of mine:

Boy?

Girl?

Girl?

Boy?

 

[Folly's place]

Feather sexing is irrelevant unless their parents were selected to pass on that trait. So, you'll be right 50% of the time with this hatch.
Cute chicks though!
Mary

 

[HennyPenny44]

Feather sexing is irrelevant unless their parents were selected to pass on that trait. So, you'll be right 50% of the time with this hatch.
Cute chicks though!
Mary

Gosh darn it! Ok, I guess I can wait a bit longer. The suspense is killing me though!