Conservationists say it's a thinly veiled attempt to allow more grazing and drilling, similar to Trump's efforts to roll back national monument designations.
The Wyoming Legislature approved a five-year trial period for captive breeding earlier this year and instructed Game and Fish to develop rules by Sept. 1.
Grazing on land occupied by greater sage grouse has been frequently cited as a reason for the bird's decline, along with disease, oil and gas drilling and other factors.
A federal judge in Nevada could rule any time now on a lawsuit filed nearly a year ago in an effort to block protections of the greater sage grouse across much of the West.