diff --git a/src/openalea/phenomenal/tracking/trackedPlant.py b/src/openalea/phenomenal/tracking/trackedPlant.py
index 7f08768..2a24ef8 100644
--- a/src/openalea/phenomenal/tracking/trackedPlant.py
+++ b/src/openalea/phenomenal/tracking/trackedPlant.py
@@ -345,5 +345,6 @@ def growing_leaf_tracking(self):
 
     def output(self):
         ranks = [snapshot.leaf_ranks() for snapshot in self.snapshots]
+        features = [[leaf.features for leaf in snapshot.leaves] for snapshot in self.snapshots]
         checks = np.array([snapshot.check_continuity for snapshot in self.snapshots])
-        return ranks, checks
+        return ranks, features, checks