Then-Acting BLM Director Casey Hammond said in Idaho in July the Trump administration won't pursue lethal measures such as euthanasia or selling horses for slaughter.
Wild horses are generally viewed as iconic symbols of the West, but officials say they have few predators and quickly overpopulate what rangelands can support.
The $1,000 adoption bonus is included in the four management alternatives the agency is mulling as it seeks a way to address what it admits is a costly, difficult challenge.