A look at poultry operations in Oklahoma by Curtis Killman, Tulsa World, Dec. 7, 2018
A very informative look at the scope of the poultry industry in Oklahoma, especially in the Illinois River watershed counties of Adair, Cherokee and Delaware Counties.
Take aways of this article:
As of August 2018, there were 2433 permitted poultry houses in Oklahoma capable of housing over 59 million birds according to the Oklahoma Department of Agriculture Food and Forestry.
One-half of the registered bird capacity is in Adair and Delaware Counties
Three companies dominate the poultry integrator market in Oklahoma: Simmons Foods, Tyson Foods and OK Foods

Poultry operations in northeastern Oklahoma in the Lake Tenkiller and Eucha/Spavinaw watersheds total have a capacity of 15.2 million birds at any one time (nearly eight-million birds in the Lake Tenkiller watershed)
Graph of poultry houses in nutrient-sensitive watersheds