In a phenological trap, a species changes the timing of a major life event in response to an environmental cue - but, that shift proves maladaptive due to unprecedented environmental conditions like climate change. This study shows that African wild dogs, which are distantly related to wolves and raise young cooperatively in packs, may be caught in a “phenological trap,” according to lead author Briana Abrahms, a UW assistant professor of biology and researcher with the Center for Ecosystem Sentinels. But as a result of this significant shift, fewer pups survived their most vulnerable period because temperatures during their critical post-birth “denning period” increased over the same time period, threatening the population of this already endangered species. They discovered that, over a 30-year period, the animals shifted their average birthing dates later by 22 days, an adaptation that allowed them to match the birth of new litters with the coolest temperatures in early winter. A team led by researchers at the University of Washington, in collaboration with Botswana Predator Conservation, a local NGO, analyzed field observations and demographic data from 1989 to 2020 for populations of the African wild dog - Lycaon pictus.