I have a rooster in the mix and don't know who it is. Help please!

[I am the Chicken Lord]

I agree, the buff silkie looks like a cockerel. The white silkie was my first assumption until I scrolled down. Not overly familiar with silkies though so don’t hold me to it. Beautiful birds though. They are far more photogenic than mine lol.

 

[Jedstar]

My backyard flock is now almost 20 weeks old. Over the past couple days I have gone outside and heard crowing. Once I get to the coop it stops and I can't identify the culprit. Roosters aren't allowed in my town and houses are close together so I need to deal with this ASAP before my neighbors complain. I bought sexed chicks online so they should all be females but you never know.

Here's my flock (it was hard to get pictures of them):
Australorp:
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Blue Black Splash Orpington:
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Easter Egger:
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Blue Black Spash Easter Egger:
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Silked Easter Egger:
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And then this is my current main suspect: Buff Silkie (which I know are very hard to sex):
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Any help or assistance given would be greatly appreciated! Thanks!

Yeah that orange brown silkie is your rooster. I guarantee it. Watch him and he will crow.or should I say spy on him.

 

[Cwestlake]

Go have a talk with your Buff Silkie tell him pipe down on the Crowing so you can keep him! Beautiful flock you have

 

[Silkie Rancher]

I have two silkie roosters and I can tell you the buff one is definitely a boy and he's very pretty.

I'm not supposed to have roosters and I live in the middle of downtown so I made some Velcro neck strap similar to a no crow rooster collar and my neighbor's not only don't complain but don't even know I have roosters