We have this jay that seems to love attacking windows, cats, and probably people each spring. To my knowledge, this is because they get aggressive when young jays hatch. Although it’s too soon for the little jays to be born, we had some window-smashing today and I expect that to last for at least another month, until the end of May.
Veselin.blog 
crazy jay!
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Just look like crows., apparently from the same family. Strange how magpies look and behave differently.
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They actually smash windows?
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