Redwings are back in most of Wisconsin now, staking out territories in marshes and other habitat. The sandhill crane was third, with 7%, and the northern cardinal was fourth, with 5%.

Bird migration underway as warmer temps return to Wisconsin Warblers, songbirds, shorebirds and ducks are flocking back amid the mild spring weather. TONIGHT WITH DAVID MUIR AT 530.

Hunnicutt said that money will go to her 3-year-old daughter, whose bird feeder the Yellow Grosbeak is visiting. "All of this is going in her piggy bank," said Hunnicutt.

The offspring of a scarlet tanager and rose-breasted grosbeak—distantly related birds whose evolutionary paths diverged 10 million years ago—was recently found in Pennsylvania.