Sexing 12 week Plymouth rock

[Blaxlandmick]

Hello,
I have a 12 week Plymouth Rock that I hatched underneath a broody Wyandotte.
I’m starting to think I have a roo (Melvyn) after originally being certain it was a hen (myrtle).
These are some pics at hatching and 12 weeks

Thanks in advance

 

[Tookie]

For sure a cockerel.

 

[Tookie]

Also welcome to BYC!

 

[Sussex19]

Yes, he is a cockerel.
Welcome to BYC!

 

[EmmaRainboe]

Male.

 

[Lovely Lettie]

Male.