Swedish Flower and Russian Crested - what's the difference?

[Perris]

I just discovered from this site https://yandex.ru/images/search?sou...qkUJLmyPhW5PG2E3ZbrA&ui=desktop&rpt=imagelike
that Russian crested cocks can look very similar indeed to my Sven and his son Chirk. I am aware that there is no breed standard for SFH, and that some do not have crests, but I know nothing about the Russian crested breed. Can anyone enlighten me please?

 

[ChickenCanoe]

http://www.feathersite.com/Poultry/CGP/Russian Crested/BRKRusCrested.htmlhttp://www.feathersite.com/Poultry/CGP/Swede/BRKSwedeSpot.html

 

[Perris]

thanks @ChickenCanoe ; I was hoping for more description, as the feathersite page is a bit thin (and their photos don't show any birds remotely like Sven or Chirk!)

 

[Perris]

I since found this - doh! How did I miss it?!?
https://www.backyardchickens.com/reviews/russian-crested.11603/