Marty’s photo of the day #2989: This is not a particularly high quality photo, because as I’m taking it, I’m standing in the dark, in slippery bat guano, in a rainstorm, at the edge of a deep pit. But what I’m watching is one of nature’s great spectacles. Puerto Rican boas are hanging from the rocks, at the entrance to a cave, snatching bats out of the air. If you look closely you can see that one of the boas has a bat in her coils.