Emily Kwong (host, with guest Nell Greenfield‑Boyce also speaking within these segments)

So like if the glass is reflective, you know, the birds will see sky and trees and that's attractive to them.

And if the glass is transparent, they think they can go like right through it.

So I walked with this other volunteer, Elizabeth Fuse.

She showed me this building that kind of wraps around a plaza.

It has two sections that converge on this big glass atrium.

And she was saying like this basically funnels birds towards this multi-story wall of glass.

There we found like this dead common yellow throat.

So that's a songbird with this lemon colored chest and like this little black bandit mask.

This is ridiculous.

That bird deserved to make the journey to Mexico.

It is really sad, right?

Like there's so many deaths.

They're just like finding these bird corpses all the time.

So they record all these deaths.

They have this database, years of data.

And it's this group called Lights Out DC that's been doing this.

And, you know, basically...

They want people to turn off artificial lights that attract the birds.

But their numbers are used for other stuff, too, right?

They're part of what's helped researchers make estimates of the total number of the dead.