Bison Roundup, Tallgrass Prairie Preserve
I (Claire here), was raised in the Osage and grew up around this beautiful country.  Fall was always gorgeous, but I remember when the Nature Conservancy took over the old Chapman Barnard Ranch and how excited folks in the area were.  Then they released the first bison on the preserve, and we were even more excited.
Click image for close up view

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The Bison are lured into a 270 confinement

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Expert cowboys direct the bison one by one into the chutes.

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Slowly the 270 pen becomes a little smaller

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A bison bull is in the squeeze chute and ready to be examined.
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He's a big bull.
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Bob Hamilton & Jim Bob quickly read his transponder and announce he's a "keeper!"
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"I'm outta here!" and that bison is done for the year!

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Fall in the Osage is beautiful.

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On a personal note, this is the building in Pawhuska, where my grandfather set up business just after statehood.

TNC History in the Osage
As I (yes, it's Claire again) grew up in this area, I have benefited from seeing the change in the management of land through the decades.  When I was a kid, prairie fires were an inevitable evil that ranchers and farmers had to live with.  We all dreaded them but knew they would happen.  And although we always enjoyed those wet and wonderfully temperate summers, we knew they would lead to over growth of the grass, and much more fuel than normal for the following winter's fires.  Sure enough the winter and lack of moisture would roll around and the fires would be worse than they normally were.

The Nature Conservancy came to town (and purchased the Chapman Barnard Ranch) and immediately started prescribed burning which all the local ranchers and farmers thought was lunacy...why would you purposely light a fire when most of the locals worked hard just to keep fires the furthest from their land as possible. 

What TNC proved, was that through prescribed burnings, not only was the fuel that was available for the fires that did happen (outside of the prescribed burns) more manageable, but they were also fewer and further between.  IOW, TNC would manage-burn areas during high humidity and low wind days, the grass that grew back was green nutritious sprouts for the bison to munch on, plus when the unexpected prairie fires did occur, there wasn't much fuel, so the fire would burn fast and quick over the land, which meant that most critters could crawl just a little underground and be safe while the fire scurried on down the prairie.  Additionally, the fires often just died out from lack of fuel and were much easier to fight.

This is one of the benefits of having the land managed by TNC as opposed to the National Parks system who have a policy of leaving the land alone.  And even at that the National Parks system has problems with that, as they have manipulated and encouraged the growth of bison and introduced wolves into Yellowstone.  Even the National Parks have to admit that certain amount of manipulation is for the ultimate benefit of the land.

 You can like the Nature Conservancy's  page here.