A Northern Cardinal is a striking sight when you go ... Both female and male cardinals sing, but the female's song is often longer and more complex. They have a clear, whistling tone which may ...

Why do birds sing so much during this time ... but some female songbirds croon, too. Female northern cardinals create a softer version of the male cardinal’s song, sometimes in unison with ...

The northern cardinal is the state bird and lives in Illinois ... and they are one of few species of birds that both male and female can sing,” Hudmon says. He noticed customers’ interest ...