Violet-green Swallow — By Rob Stoeltje

An unprecedented bird die-off — that’s how the September 16th article in Audubon described it. Groups of migrating birds were discovered lying dead in deserts, along rivers, in parks and backyards. Hundreds were strewn over the ground at White Sands National Park, an old missile range in New Mexico.

“A mass death event,” the article reads, but they don’t know what’s causing it, only that it’s impacting a huge variety of…