Wildlife managers must stay abreast and act quickly when deleterious situations for sensitive wildlife prey emerge because of human subsidy of predators. The StallPOPdV4Softwareleverages density independent and density dependent population matrix models to identify population reduction strategies that may be used by managers to reset, slow, or halt subsidized population growth of a 3-stage species, such as the common raven (Corvus corax).The StallPOPdV4Software is not limited to use with common ravens; it may be used to identify treatment strategies for any species depicted by a three-stage life history. This software is the fourth of its kind behind StallPOPd Software(Version 1.0; Shields et al. 2019b), StallPOPdV2 Software(Hanley et al. 2020a), and StallPOPdV3 Software(Hanley et al. 2020b).

The findings and conclusions in this article are those of the author(s) and do not necessarily represent the views of the U.S. Geologic Survey nor the U.S. Fish and Wildlife Service.