The aim of this study was to determine if there is a seasonal pattern of sexual activity in female North Moroccan goats and if this seasonality could be modulated by nutrition. Eighteen female adult non pregnant goats were maintained indoors under natural day length conditions (35°N) and monitored during 12 months. The animals were allocated to two experimental groups differing in the nutritional level, H (n = 9) receiving a diet calculated on the double of the maintenance requirements and L (n = 9) with a maintenance diet. Groups were balanced for live weight at the beginning of the study (33.4  4.1 kg and 33.3  4.1 kg; P > 0.05). Vasectomized bucks were used twice daily to detect oestrus, ovarian activity was monitored by the progesterone concentrations in blood samples collected trice weekly. The live weight was recorded weekly. A high plane of nutrition enhanced animals growth; and at the end of the experiment live weight was higher in H the group than L group (40,6  7,3 kg vs 34,2  4,8 kg; P < 0,05). However no differences were observed between groups H and L regarding anoestrus duration (216  36 days vs 200  67 days, P > 0,05) and anovulation (206  59 days vs 195  29 days; P > 0,05) periods. During the year, the proportion of ovulating animals increased gradually from July to December (3/18 – 18/18) then declined gradually between January and March (17/18–10/18). No ovulation was recorded during the month of April, Mai and June. A similar distribution was observed for oestrous behaviour. This pattern is closely related with the variation of the photoperiod; maximal and minimal periods of sexual activity were associated with winter and summer solstices, respectively. These results demonstrate that the female North Moroccan goat exhibits a seasonal pattern of reproduction. This pattern is under the control of photoperiod and cannot be modulated by the level of nutrition.