I wrote about birds and mirrors a while ago, and not much has changed scientifically since then. Most bird species tested have interpreted their own reflections as other individuals, responding either with aggression or courtship. Female pigeons who view their own reflections ovulate, apparently interpreting their reflections as suitable mates. Among birds, only magpies, so far, have been demonstrated to understand that the mirror reflects their own image, although pigeons can be trained to use spatial information from mirrors correctly in the real world.
So why bring this up again? Recently I saw a Yellow-rumped Warbler interacting with its reflection in a car side mirror, and took a video with my phone. Here it is (apologies for the lack of zoom):
At the time I took the video, I didn’t think much of it beyond general amusement. But rewatching it, I began to have some questions.
Consider the pigeon. Among birds, they are distinguished by their abilities to drink water through their nostrils and to raise their babies on a diet of human trash. It might surprise you, then, to learn that a number of scientific studies have focused on pigeons’ taste in art.
This abstract work, in feces and found lamppost, really captures the satisfaction of finding a good place to perch.
To be fair, these studies aren’t aimed at divining pigeons’ preferences so that museums can better appeal to the aesthetics of critical tastemaker pigeons; the goal is to understand how animals perceive images. Pigeons are easily raised and trained, so they are a good model to look at visual processing in birds. And why use art? “Discrimination of visual arts is an extreme example of higher visual cognition” (Watanabe 2011). So there is logic to this. But it still produces papers with titles like “Van Gogh, Chagall and pigeons.”