We talked to Polly via Zoom about his observations of the Cliff Swallows' nests at Walgreens over the spring season, the time they were expected to return.

Well, anyone that's collecting a prescription from Walgreens will go through the drive-through lane.

And there's a north-facing concrete wall, which you can look straight up, and I did this on Susan's beckoning.

that there are patches on the wall there where the nests were, and they have been taken down.

And I'm not accusing anyone of doing that.

Mainly the problem is being right over the drive-through lane.

The poop and the mud and so on will come down there.

You should just run really fast with your mouth open and see what happens.