Boinije, or Bij, which includes the Baku, Uzbekistanian, Tashkentian, Agaranski and other assorted "Crack" type tumblers. The Boinije come in assorted types with different ornamentations, but are easily identified by their performance which involves heavy wing clapping that makes quite a commotion (hence the term "Crack" or "Shooter") and opposed to tumbling or rolling downwards like the Birmingham Roller, the Boinije roll upwards and often executing column style performance (which is called Astanoifka), during which the birds gradually rise hundreds of feet into the sky.

Uzbekistan Tumblers
Baku Tumblers