diff --git a/vespadb/observations/models.py b/vespadb/observations/models.py
index ba97446..898a28e 100644
--- a/vespadb/observations/models.py
+++ b/vespadb/observations/models.py
@@ -395,6 +395,9 @@ def save(self, *args: Any, **kwargs: Any) -> None:
             logger.info(f"Save method for observation {self.id if self.id else 'new'}: Setting municipality={self.municipality}, province={self.province}, anb={self.anb}")
 
         super().save(*args, **kwargs)
+    
+    class Meta:
+        ordering = ['id']
 
 class Export(models.Model):
     """Model for tracking observation exports."""
diff --git a/vespadb/observations/views.py b/vespadb/observations/views.py
index cd6b595..7216506 100644
--- a/vespadb/observations/views.py
+++ b/vespadb/observations/views.py
@@ -154,6 +154,8 @@ def get_queryset(self) -> QuerySet:
         Unauthenticated users see only unreserved observations.
         """
         base_queryset = super().get_queryset()
+        if not self.request.query_params.get("ordering"):
+            base_queryset = base_queryset.order_by("id")
         order_params = self.request.query_params.get("ordering", "")
 
         if "municipality_name" in order_params:
@@ -404,7 +406,7 @@ def geojson(self, request: Request) -> HttpResponse:
             if bbox:
                 queryset = queryset.filter(location__within=bbox)
 
-            queryset = queryset.annotate(point=Transform("location", 4326))
+            queryset = queryset.order_by("id").annotate(point=Transform("location", 4326))
 
             features = [
                 {