![Mallard at Stover - The Hall of Einar - photograph (c) David Bailey (not the)](https://www.thehallofeinar.com/wp-content/uploads/2019/03/Stover-The-Hall-of-Einar-0424-332x221.jpg)
Purple flash
This female Mallard duck is showing a very distinctive wing patch. It’s called a speculum. No, not that kind of speculum, it’s …
This female Mallard duck is showing a very distinctive wing patch. It’s called a speculum. No, not that kind of speculum, it’s …