Anyone who’s been paying attention knows that high school sex education in the United States is an unholy mess. And as a result, an alarming number of students enter university with little knowledge about how their bodies work in terms of reproductive health.
The birds you see above are all ruffs (Philomachus pugnax): wading birds that summer in marshes through Northern Europe and Asia. All three are wearing different forms of breeding plumage. And all of them are male.