The birds in my front yard...

Many years ago, in elementary school, I did a report on "the birds in my backyard". It was all about birds that live in Southern Alberta. All I really remember is visiting a couple in Welling that raised peacocks. I had a big display with pictures and descriptions of all the birds...Today, I will tell you all about the birds in my front yard. We've got a tree in our front yard that was full of berries this winter. When the birds arrived this spring, they were in heaven! I could identify the robins, but there was another kind of bird (a waxwing) that I'd never really noticed until now. They came in large numbers enjoying the berries... One day we were playing in the living room (which has a big window to the front and our berry tree) when there was a big bang on the window. It sounded like when Chris would throw a snowball at the kids while they stood in the window watching him, but there was no snow, and no one even close to the house... I was confused, but went on with life, not thinking about it. Until it happened again...and again...finally, I figured out what it was. The birds, while feasting on the berries, were startled by a car or something from the direction of the road, and flew off in the direction of the house. Some of the birds didn't make it over or around the house and flew straight into the window!! We wondered if maybe the berries had fermented and the birds were getting drunk on them. Many of the birds were simply stunned, then managed to fly away. Some, however, were not so lucky. Those birds, I am pretty sure, became a midnight snack for the neighborhood cats.
Here's some pictures...