Kirsty Swinnerton works primarily on the recovery of endangered species, mostly in island ecosystems. She is a strong proponent of using hands-on management techniques to restore threatened species, including invasive alien species eradication and control. Early on in her career she experienced first-hand the devastating impacts of invasive species through her work to restore the Mauritius Pink Pigeon. Subsequent work in Hawaii, Pacific Northwest, and the Caribbean consolidated her focus on invasive species, particularly towards eradication to restore seabird populations and endemic reptiles. She is co-Chair of the invasive species working group for BirdsCaribbean, a network of more than 60 partners across the region committed to conserving Caribbean birds and their habitats.