Resources ≀ Predator/Prey Relationships

Caribou and reindeer Rangifer tarandus are declining across North America and Scandinavia in part from wolf Canis lupus-mediated apparent competition with more abundant ungulate prey species. While caribou generally persist in areas with low wolf density, wolf packs that overlap … read more

In 2019, the government of British Columbia killed more than 460 wolves as part of the province’s multimillion-dollar caribou recovery plan.  Now, a study from the University of Alberta suggests that the cull is doing little to save the most … read more

Canis lupus (Gray Wolf) have been suspected as natural predators of Cygnus buccinator (Trumpeter Swan), but detailed descriptions of such predation events are lacking from the peer-reviewed literature. Herein, we document a Trumpeter Swan that was killed by a Gray … read more

Atlanta, GA, USA, has been one of the fastest growing metropolitan areas in the US over the past several decades, with a human population now close to 6 million. Urbanization has been rapid and widespread, thereby creating a highly fragmented … read more

Background: Predation and hunter harvest constitute the main mortality factors affecting the size and dynamics of many exploited populations. The re-colonization by wolves (Canis lupus) of the Scandinavian Peninsula may therefore substantially reduce hunter harvest of moose (Alces alces), the … read more

Each year, we conduct an aerial survey in northeastern Minnesota in an effort to monitor moose numbers (DelGiudice, 2017). While the objectives of this annual survey are to estimate moose numbers and demographics; since 2010, wolf and deer observations have … read more