5 week old Silkie crowing?

[Lovelylegs]

Is it normal for my 5 week old Silkie to start crowing? Not sure yet which one it is and I can’t figure out how to post a video on here of the sound I hear a few times every morning the past couple of day. Everything I have read online says 4-6 months but my silkies are 5 weeks old today.

 

[nuthatched]

Some cockerels crow early as 4 weeks, pull up a chair and observe.

 

[Folly's place]

Our Fayoumi started to crow at 28 days of age, and it was adorable!
Mary