This study used an ethological approach to explore the baby-caregiver dyadic exchanges (Attempted interactions, Triggers, Interactions) of nineteen infants during their first weeks in Residential Care (RC), or a Foster Family (FF) or an Infant-Mother Centre (IMC). Direct observations were conducted at feeding time. Observed behaviours were: baby glances/gazes, dyadic exchanges and dyadic exchanges' initiator, in addition to the baby's behavioural repertoire. Descriptive analyses showed that attempted interactions were emitted more often than triggers, which themselves were more frequent than interactions. Interactions took place more often during the post-feeding phase. Vocalizations were linked to the infant's capacities to initiate interactions, and mouth movements were linked to sustained gazing. Non-parametric analyses showed that, in RC, fewer dyadic exchanges happened and babies showed the least visual attention. By contrast, in IMC, sustained gazes and baby-mother interactions were the highest. In FF, the results fell between those obtained in RC and IMC.