diff --git a/radicale/app/propfind.py b/radicale/app/propfind.py
index 0378c1e9..a0ce858b 100644
--- a/radicale/app/propfind.py
+++ b/radicale/app/propfind.py
@@ -127,6 +127,10 @@ def xml_propfind_response(
     href.text = xmlutils.make_href(base_prefix, uri)
     response.append(href)
 
+    share_bday_automap = False
+    if share and share['ShareType'] == "bday":
+        share_bday_automap = True
+
     if propname or allprop:
         props = []
         # Should list all properties that can be retrieved by the code below
@@ -155,12 +159,16 @@ def xml_propfind_response(
         if is_collection:
             if is_leaf:
                 props.append(xmlutils.make_clark("D:displayname"))
-                props.append(xmlutils.make_clark("D:sync-token"))
-            if collection.tag == "VCALENDAR":
+                if share_bday_automap:
+                    # bday share has no sync-token support
+                    pass
+                else:
+                    props.append(xmlutils.make_clark("D:sync-token"))
+            if collection.tag == "VCALENDAR" or share_bday_automap:
                 props.append(xmlutils.make_clark("CS:getctag"))
                 props.append(
                     xmlutils.make_clark("C:supported-calendar-component-set"))
-            if collection.tag == "VADDRESSBOOK":
+            if collection.tag == "VADDRESSBOOK" and not share_bday_automap:
                 props.append(xmlutils.make_clark("CS:getctag"))
                 props.append(
                     xmlutils.make_clark("CR:supported-address-data"))
@@ -205,6 +213,8 @@ def xml_propfind_response(
             if share:
                 # backmap
                 child_element.text = child_element.text.replace(share['PathMapped'], share['PathOrToken'])
+                if share_bday_automap:
+                    child_element.text = child_element.text.rstrip(".vcf") + ".ics"
             element.append(child_element)
         elif tag == xmlutils.make_clark("C:supported-calendar-component-set"):
             human_tag = xmlutils.make_human_tag(tag)
@@ -214,6 +224,9 @@ def xml_propfind_response(
                     components = components_text.split(",")
                 else:
                     components = ["VTODO", "VEVENT", "VJOURNAL"]
+                if share_bday_automap:
+                    # enforce VEVENT-only
+                    components = ["VEVENT"]
                 for component in components:
                     comp = ET.Element(xmlutils.make_clark("C:comp"))
                     comp.set("name", component)
@@ -221,7 +234,7 @@ def xml_propfind_response(
             else:
                 is404 = True
         elif tag == xmlutils.make_clark("CR:supported-address-data"):
-            if is_collection and is_leaf and collection.tag == "VADDRESSBOOK":
+            if is_collection and is_leaf and collection.tag == "VADDRESSBOOK" and not share_bday_automap:
                 # Advertise supported vCard versions per RFC 6352 section 6.2.2
                 # vCard 4.0 requires vobject >= 1.0.0
                 versions: Sequence[str] = (("4.0", "3.0")
@@ -243,6 +256,8 @@ def xml_propfind_response(
                 if share:
                     # backmap
                     child_element.text = child_element.text.replace(share['Owner'], share['User'])
+                    if share_bday_automap:
+                        child_element.text = child_element.text.rstrip(".vcf") + ".ics"
                 element.append(child_element)
             else:
                 element.append(ET.Element(
@@ -254,7 +269,8 @@ def xml_propfind_response(
                     if "P" in share['Permissions']:
                         privileges.append("D:write-properties")
                     if "w" in share['Permissions']:
-                        privileges.append("D:write-content")
+                        if not share_bday_automap:
+                            privileges.append("D:write-content")
             elif write:
                 privileges.append("D:all")
                 privileges.append("D:write")
@@ -272,10 +288,10 @@ def xml_propfind_response(
                        "D:principal-property-search"]
             if is_collection and is_leaf:
                 reports.append("D:sync-collection")
-                if collection.tag == "VADDRESSBOOK":
+                if collection.tag == "VADDRESSBOOK" and not share_bday_automap:
                     reports.append("CR:addressbook-multiget")
                     reports.append("CR:addressbook-query")
-                elif collection.tag == "VCALENDAR":
+                elif collection.tag == "VCALENDAR" or share_bday_automap:
                     reports.append("C:calendar-multiget")
                     reports.append("C:calendar-query")
             for human_tag in reports:
@@ -306,6 +322,9 @@ def xml_propfind_response(
                 if is_leaf:
                     element.text = xmlutils.MIMETYPES[
                         collection.tag]
+                    if share_bday_automap:
+                        # overwrite
+                        element.text = xmlutils.MIMETYPES["VCALENDAR"]
                 else:
                     is404 = True
             elif tag == xmlutils.make_clark("D:resourcetype"):
@@ -314,11 +333,11 @@ def xml_propfind_response(
                         xmlutils.make_clark("D:principal"))
                     element.append(child_element)
                 if is_leaf:
-                    if collection.tag == "VADDRESSBOOK":
+                    if collection.tag == "VADDRESSBOOK" and not share_bday_automap:
                         child_element = ET.Element(
                             xmlutils.make_clark("CR:addressbook"))
                         element.append(child_element)
-                    elif collection.tag == "VCALENDAR":
+                    elif collection.tag == "VCALENDAR" or share_bday_automap:
                         child_element = ET.Element(
                             xmlutils.make_clark("C:calendar"))
                         element.append(child_element)
@@ -335,6 +354,8 @@ def xml_propfind_response(
                     displayname = share['Properties']["D:displayname"]
                 if displayname is not None:
                     element.text = displayname
+                    if share_bday_automap:
+                        element.text += " (BDAY)"
                 else:
                     is404 = True
             elif tag == xmlutils.make_clark("RADICALE:getcontentcount"):
@@ -351,6 +372,8 @@ def xml_propfind_response(
                     displayname = collection.path
                 if displayname is not None:
                     element.text = displayname
+                    if share_bday_automap:
+                        element.text += " (BDAY)"
                 else:
                     is404 = True
             elif tag == xmlutils.make_clark("CS:getctag"):