Geographies of more-than-human relations have flourished in the past decade, offering innovative methodological and conceptual approaches to studying how humans are entangled with an array of animate and inanimate actors. This Thinking Space essay explores how the more-than-human underpins many pressing contemporary concerns around mobility and immobility. Using examples of recent news and public debates involving avian migrations and biosecurity, I unpack the more-than-human mobilities that shed light on questions of borders and security, notions of belonging and coexistence, and the ways that future scholarship might use more-than-human mobilities as a central understanding for doing innovative and just research.