Ten lessons for rare wildlife species conservation when coming from a common species background

Efforts to slow biodiversity loss have ushered in an era of proactive conservation for rare species, or species that have any combination of low relative abundance, high habitat specificity, and limited geographic range. Approaches to wildlife management and conservation were often developed for more abundant, generalist species, and frequently do not translate well to rare species. Conservation for rare species therefore requires adapting knowledge, action and inquiry tools for common species to rare species. We therefore present 10 lessons for adapting conservation tools to rare species, each with advice to implement the lessons. Several themes emerge from these lessons. Information scarcity necessitates high standards of information for rare species. Missing rare species information can be complemented with multiple forms of knowledge, particularly when the need for conservation action precludes additional data collection. Investment in depth (over breadth) of information for individuals of rare species can provide alternatives to population trend, which has lower reliability for rare species. Natural history documentation can improve rare species conservation strategies. Finally, curiosity-driven inquiry can inspire rare species conservation innovation. We hope providing guidance that addresses challenges for rare species will help others bridge the gap between common wildlife approaches and proactive rare species conservation.