This article examines caregivers' everyday language choices and interactions with children in an urban Zapotec community in Mexico, where Diidxazá is being displaced by Spanish in everyday use. It argues that caregivers' language choices and interactions get entangled in complex ways with the socio-cultural organization of everyday life and with local pedagogies and understandings of children's development, which, in turn, shape children's participation roles and long-term developmental trajectories as learners and speakers.