The thrilling new sound recordings provide clear and convincing evidence that the ivory-billed woodpecker is not extinct.

We had to have some kind of frequency multiplier,

We were very skeptical of the first published reports, and thought that the previous data were not sufficient to support this startling conclusion. But the thrilling new sound recordings provide clear and convincing evidence that the ivory-billed woodpecker is not extinct.

Understanding these mechanisms of feather growth gives a whole new perspective on the unique beauty of feathers.

I was just utterly stunned, ... There's literally no bird in the world that does anything that prepares you for it. It's totally unique.

I find the paper to be an impressive demonstration of the molecular basis of an atavism.