Kirk grew up in Bountiful, Utah between the shore of the Great Salt Lake and the foothills of the Wasatch Mountains. As a child, he loved roaming the foothills looking for wild animals and visiting Farmington Bay Bird Refuge. Naturally, he fell in love with the land and its wildlife. Since those early years, he has spent a big part of his life exploring the deserts, rivers, and mountains of the West.

In the 1990s, Kirk and some friends from the Utah Wilderness Association began working to reform Utah wildlife governance and management to make it more democratic, ecologically sound, and compassionate. This led to the founding of a non-profit organization, Western Wildlife Conservancy, to address the issues. Of particular concern is the scientifically and ethically misguided way that native carnivores such as mountain lions, black bears, and gray wolves are treated. The vital role that these intelligent and magnificent creatures play in maintaining the health of ecosystems goes unappreciated, as evidenced by a long history of persecution. In addition to being Executive Director of Western Wildlife Conservancy, Kirk is on the Leadership Council of The Rewilding Institute and the Advisory Committee of Wildlife For All.

Prior to Western Wildlife Conservancy, Kirk was a Professor of Philosophy. He has a PhD in Philosophy from the University of Cincinnati and has taught at universities in Montana and Utah. In 2004, he graduated from the S.J. Quinney College of Law at the University of Utah with a certificate in Natural Resource Law to better equip him for work on wildlife conservation issues. In his free time, he enjoys backpacking, x-c skiing, river trips, playing the acoustic guitar, and time spent with friends and with his dog Bingo.