Wondernose: What birds sometimes lose their lives by getting swept over Niagara Falls?

Wondernose: What birds sometimes lose their lives by getting swept over Niagara Falls?

I can see that you are quite puzzled by our riddle, Wondernose. Why ever would a bird fall over Niagara Falls? Tundra Swan. Photo © Andy Shubin/Dreamstime.com. To explain why this can happen, I must introduce you to a scientific term called “wing loading.” Different...