Avian recognition of human faces
I’ve added my comments on the physorg.com site to those that follow this article, which attempts to convince us that birds recognize individual human facial features via some unknown mechanism that does not involve olfaction and pheromones.
Most people who have had the experience of having pet animals in their houses have the gut feeling that the animals can “recognize” us. They seem to recognize our faces, our voices and our smell. One way or another, they respond to us differently from other people.