The aim of this study was to describe in detail the longitudinal growth and feeding traits, that are key phenotypes for feed efficiency and force-feeding, in the three genetically different types of ducks farmed for fatty liver production in France (Muscovy, Pekin, and mule ducks). Forty-one Muscovy, 35 Pekin, and 40 mule ducks, all males, were reared with single-place electronic feeders to compare their growth performances and feeding traits. Data were analyzed from 28 to 49 days of age, after eliminating multiple-bird and unidentified visits (between 1 and 6% of data per genetic type). We studied the different traits at three time scales: for the entire trial (covering 4 weeks), by week and by day. The effects of the genetic type (for the three time scales), the time scale and their interaction (for week and day scales only) were tested using linear mixed models with SAS software. At the trial scale, the hybrid mule was characterized by a feeding behavior close to that of Pekin ducks, and a production performance similar to Muscovy ducks. Like Pekin ducks, mule ducks consumed two less per visit (26.8 g) than Muscovy ducks (P < 0.0001), and their visits were six times shorter (73 s, P < 0.0001). Thus, their feeding rate was higher (22.6 g/min, P < 0.0001). The number of visits to the single-place electronic feeders was two times higher for Pekin and mule ducks (8.3 and 9.0 visits, respectively) than for Muscovy ducks (P < 0.0001). The body weight of mule ducks, although superior from the body weight of Muscovy ducks at the beginning of the test (1.69 kg vs. 1.42 kg, P = 0.0002), was found to be equivalent at 38 days of age (around 2.54 kg). At the week scale, feed intakes increased between week 5 and 7 (in average + 266 g). Except for Muscovy ducks, the visit duration was relatively stable over weeks and the number of visits decreased with age, leading to an increase in the length of the intervals between visits. At the day scale, all three genetic types of ducks fed mostly during the daytime, with more than 90% of the feed consumed between 5:00 and 23:00. Further development is required to limit multiple-bird visits to the single-place electronic feeder in particular with Muscovy ducks, and to enable data collection during the necessary feed restriction period before force-feeding for fatty liver production and during the mating period.