Way back in 2010, when I first started this blog, I wrote a post about a news report on the phenomenon of gynandromorphism (a condition in which half the body is male and the other half female) in chickens. In that post, I engaged in some speculation:
I am wondering—is this kind of gynandromorphy unique to chickens, or does it occur in other birds? It would be barely noticeable in many species, but obvious in sexually dimorphic birds like woodpeckers and certain songbirds. When a half-male, half-female Northern Cardinal (Cardinalis cardinalis) shows up at the bird feeder, that would attract some attention.
And now it turns out that a gynandromorphous Northern Cardinal has been observed, and is the subject of this video that was posted on the online magazine Slate in January.