When I was young, we whould go to my grandpa's place during summer school holidays. He would go to the porch of his cottage every morning, call out to the crows

When I was young, we whould go to my grandpa's place during summer school holidays. He would go to the porch of his cottage every morning, call out to the crows shouting "kaaa... kaaa... kaaa..." and tossed pieces of bread in the air. Whole bunch of crows. They would be ready for this daily feeding frenzy and would catch every since piece of bread in the air without fail. It was a free animal acrobatics show that I never got tired of watching.