The Kirtland Warbler of Northern Michigan (and spreading) is a perfect example of a nearly extinct species benefiting from man using the land and resources.
50 years ago there were only a few dozen breeding pairs believed to nest in a few thousand square acres of central northern Michigan. Forest “conservation” efforts of simply letting the trees grow was eliminating the bird’s nesting habitat which are young jackpines 4 to 8 feet tall.
The Jack pines don’t grow in closed mature forests but require burned over land. Today between controlled burns, logging and replanting, clearing land for oil and gas extraction, the conditions for jackpines are ideal. Today the nesting Kirtland warblers are believed to be in the thousands of pairs. Their range has expanded to a full 3rd of northern Michigan, they have also expended into the northern peninsula with many sightings in Wisconsin.