How Smart Are Crows? | ScienceTake | The New York Times The New York Times 1:51 10 years ago 1 042 084 Далее Скачать
Ravens - Intelligent Rascals of the Skies | Free Documentary Nature Free Documentary - Nature 51:57 3 years ago 2 590 549 Далее Скачать
Clever crow outsmarts TWO turkey vultures with ONE move Mid-Atlantic Backyard 0:29 1 year ago 899 505 Далее Скачать
Raven Intelligence Put To The Test, Live! - Springwatch Unsprung - BBC Two BBC 2:23 12 years ago 366 663 Далее Скачать
Fascinating insights into the world of corvids - Rascals in the Skies Free High-Quality Documentaries 51:57 5 years ago 678 566 Далее Скачать