<figure><img src="https://npr.brightspotcdn.com/dims4/default/f36d23d/2147483647/strip/false/crop/4032x3024+0+0/resize/704x528!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F17%2F5e%2Faf224a34449f84f961b23d9edd17%2Fbaltz-trail-of-tears.jpg" alt="Mike Baltz"><figcaption>(Provided by Mike Baltz / Mike Baltz)</figcaption></figure>Ornithologist and ecologist Mike Baltz is back with his monthly essay on the natural history of southern Illinois.

(Provided by Mike Baltz / Mike Baltz)Ornithologist and ecologist Mike Baltz is back with his monthly essay on the natural history of southern Illinois.

(Provided by Mike Baltz / Mike Baltz)Ornithologist and ecologist Mike Baltz is back with his monthly essay on the natural history of southern Illinois.

Commentary: Mike Baltz Nature Notebook - March

WSIU takes a closer look at issues around the region. From arts and entertainment, to science and nature, the environment, politics, and other topics people are talking about.

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Commentary: Mike Baltz Nature Notebook - March

Commentary: Mike Baltz Nature Notebook - March