Is this aggressive Wyandotte a roo?

[Mrcox]

Do you think the darker Wyandotte in the front could be a boy? They are 4 months old. Sorry for the terrible picture, they’re incredibly unfriendly and the one in question is so aggressive, it almost killed one of my hens.

 

[nuthatched]

Looks like a hen but you should send her to the freezer if she actually did almost kill a hen

 

[EggSighted4Life]

Nope. At the stated age.. gender specific saddle feathers are present. Hers are rounded and female.

Introduction between new birds must be done properly.

Pecking order can be brutal.

 

[lupin27]

Looks like a pullet.

 

[SilverBirds]

Female.
How did she almost kill you hens?

 

[fluffycrow]

She's a pullet. Was she just being introduced to the other birds?