Black-crowned night heron love spreading their wings in Chicago

Fox32 Chicago's recent segment about a young black-crowned night heron perched on a River North window ledge was a fun story. But it also revealed something surprising: Most viewers had no idea that a state-endangered bird has chosen to make Chicago home. For two decades, they have returned each spring to nest in Lincoln Park, raising their young in the heart of one of America's largest cities. Their numbers tell an important story. In 1992, an estimated peak of more than 1,600 adult…