Help identifying and sexing mystery chicks?

[resinchicken]

Hi there! I know this post is a few months old, how did it turn out? Is #1 a cockerel afterall?

 

[NatJ]

Hi there! I know this post is a few months old, how did it turn out? Is #1 a cockerel afterall?

OP has a later thread:
https://www.backyardchickens.com/threads/welsummer-cockerel.1553909/

All birds turned out to be female.

The other thread is discussing one specific bird, that I think was #1 in this thread, and that turned out to lay green eggs (Starlight Green Egger or some similar mix).