sexing days old indian game x sussex ?

[MarketGardener]

ive got sussex crossed indian game cockerel, and i noticed wing feather differences in some, has anyone sexed them before im told they can be sex linked

 

[Ridgerunner]

Indian Games are called Cornish on this chart. Cornish means the Cornish breed, not the Cornish Cross. That confuses a lot of people on this forum.

According to Tadkerson's feather-sexing chart (the third chart in this post below) pure Cornish and pure Sussex are both slow-feathering so you cannot get feather-sexed crosses from them. If you are getting differences in the feathers then that means one of them is not pure for that gene (not unusual). Without knowing which one feather-sexing is not reliable.

https://www.backyardchickens.com/threads/sex-linked-information.261208/