David Stokes

David Stokes

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Banff National Park in Alberta Canada has it all! Snow covered mountains, pine fresh air, distant glaciers, brilliant turquoise lakes, alpine meadows and a charming resort town. #Banff #canada #lakelouise #morainelake #johnstoncanyon #travel

Banff National Park in Alberta Canada has it all! Snow covered mountains, pine fresh air, distant glaciers, brilliant turquoise lakes, alpine meadows and a charming resort town.

In a logic test, Eurasian jays quickly learned that adding stones to a cylinder half-filled with water would bring a tasty treat floating on the surface within reach of their beaks. In a second task the jays realised it was better to use pebbles, which sink, than corks, which float.

In a logic test, Eurasian jays quickly learned that adding stones to a cylinder half-filled with water would bring a tasty treat floating on the surface within reach of their beaks. In a second task the jays realised it was better to use pebbles, which si