diff --git a/crates/frontend/js-components/lib/create-birthday-calendar-form.ts b/crates/frontend/js-components/lib/create-birthday-calendar-form.ts
new file mode 100644
index 0000000..a99ec9a
--- /dev/null
+++ b/crates/frontend/js-components/lib/create-birthday-calendar-form.ts
@@ -0,0 +1,102 @@
+import { html, LitElement } from "lit";
+import { customElement, property } from "lit/decorators.js";
+import { Ref, createRef, ref } from 'lit/directives/ref.js';
+import { escapeXml } from ".";
+import { getTimezones } from "./timezones.ts";
+
+@customElement("create-birthday-calendar-form")
+export class CreateCalendarForm extends LitElement {
+  protected override createRenderRoot() {
+    return this
+  }
+
+  @property()
+  principal: string = ''
+  @property()
+  addr_id: string = ''
+  @property()
+  displayname: string = ''
+  @property()
+  description: string = ''
+  @property()
+  color: string = ''
+
+  dialog: Ref<HTMLDialogElement> = createRef()
+  form: Ref<HTMLFormElement> = createRef()
+  @property()
+  timezones: Array<String> = []
+
+  override render() {
+    return html`
+      <button @click=${() => this.dialog.value.showModal()}>Create birthday calendar</button>
+      <dialog ${ref(this.dialog)}>
+        <h3>Create calendar</h3>
+        <form @submit=${this.submit} ${ref(this.form)}>
+          <label>
+            Displayname
+            <input type="text" name="displayname" value=${this.displayname} @change=${e => this.displayname = e.target.value} />
+          </label>
+          <br>
+          <label>
+            Description
+            <input type="text" name="description" @change=${e => this.description = e.target.value} />
+          </label>
+          <br>
+          <label>
+            Color
+            <input type="color" name="color"  @change=${e => this.color = e.target.value} />
+          </label>
+          <br>
+          <button type="submit">Create</button>
+          <button type="submit" @click=${event => { event.preventDefault(); this.dialog.value.close(); this.form.value.reset() }} class="cancel">Cancel</button>
+      </form>
+      </dialog>
+        `
+  }
+
+  async submit(e: SubmitEvent) {
+    e.preventDefault()
+    if (!this.addr_id) {
+      alert("Empty id")
+      return
+    }
+    if (!this.displayname) {
+      alert("Empty displayname")
+      return
+    }
+
+    let response = await fetch(`/caldav/principal/${this.principal}/_birthdays_${this.addr_id}`, {
+      method: 'MKCOL',
+      headers: {
+        'Content-Type': 'application/xml'
+      },
+      body: `
+      <mkcol xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CS="http://calendarserver.org/ns/" xmlns:ICAL="http://apple.com/ns/ical/">
+        <set>
+          <prop>
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CAL:calendar-description>${escapeXml(this.description)}</CAL:calendar-description>` : ''}
+            ${this.color ? `<ICAL:calendar-color>${escapeXml(this.color)}</ICAL:calendar-color>` : ''}
+            <CAL:supported-calendar-component-set>
+              <CAL:comp name="VEVENT" />
+            </CAL:supported-calendar-component-set>
+          </prop>
+        </set>
+      </mkcol>
+      `
+    })
+
+    if (response.status >= 400) {
+      alert(`Error ${response.status}: ${await response.text()}`)
+      return null
+    }
+    window.location.reload()
+    return null
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    'create-calendar-form': CreateCalendarForm
+  }
+}
diff --git a/crates/frontend/js-components/vite.config.ts b/crates/frontend/js-components/vite.config.ts
index 7480569..9397a06 100644
--- a/crates/frontend/js-components/vite.config.ts
+++ b/crates/frontend/js-components/vite.config.ts
@@ -14,6 +14,7 @@ export default defineConfig({
 
     rollupOptions: {
       input: [
+        "lib/create-birthday-calendar-form.ts",
         "lib/create-calendar-form.ts",
         "lib/edit-calendar-form.ts",
         "lib/import-calendar-form.ts",
diff --git a/crates/frontend/public/assets/js/create-birthday-calendar-form.mjs b/crates/frontend/public/assets/js/create-birthday-calendar-form.mjs
new file mode 100644
index 0000000..7978fc8
--- /dev/null
+++ b/crates/frontend/public/assets/js/create-birthday-calendar-form.mjs
@@ -0,0 +1,122 @@
+import { i, x } from "./lit-DkXrt_Iv.mjs";
+import { n as n$1, t } from "./property-B8WoKf1Y.mjs";
+import { e, n } from "./ref-BwbQvJBB.mjs";
+import { e as escapeXml } from "./index-_IB1wMbZ.mjs";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __decorateClass = (decorators, target, key, kind) => {
+  var result = kind > 1 ? void 0 : kind ? __getOwnPropDesc(target, key) : target;
+  for (var i2 = decorators.length - 1, decorator; i2 >= 0; i2--)
+    if (decorator = decorators[i2])
+      result = (kind ? decorator(target, key, result) : decorator(result)) || result;
+  if (kind && result) __defProp(target, key, result);
+  return result;
+};
+let CreateCalendarForm = class extends i {
+  constructor() {
+    super(...arguments);
+    this.principal = "";
+    this.addr_id = "";
+    this.displayname = "";
+    this.description = "";
+    this.color = "";
+    this.dialog = e();
+    this.form = e();
+    this.timezones = [];
+  }
+  createRenderRoot() {
+    return this;
+  }
+  render() {
+    return x`
+      <button @click=${() => this.dialog.value.showModal()}>Create birthday calendar</button>
+      <dialog ${n(this.dialog)}>
+        <h3>Create calendar</h3>
+        <form @submit=${this.submit} ${n(this.form)}>
+          <label>
+            Displayname
+            <input type="text" name="displayname" value=${this.displayname} @change=${(e2) => this.displayname = e2.target.value} />
+          </label>
+          <br>
+          <label>
+            Description
+            <input type="text" name="description" @change=${(e2) => this.description = e2.target.value} />
+          </label>
+          <br>
+          <label>
+            Color
+            <input type="color" name="color"  @change=${(e2) => this.color = e2.target.value} />
+          </label>
+          <br>
+          <button type="submit">Create</button>
+          <button type="submit" @click=${(event) => {
+      event.preventDefault();
+      this.dialog.value.close();
+      this.form.value.reset();
+    }} class="cancel">Cancel</button>
+      </form>
+      </dialog>
+        `;
+  }
+  async submit(e2) {
+    e2.preventDefault();
+    if (!this.addr_id) {
+      alert("Empty id");
+      return;
+    }
+    if (!this.displayname) {
+      alert("Empty displayname");
+      return;
+    }
+    let response = await fetch(`/caldav/principal/${this.principal}/_birthdays_${this.addr_id}`, {
+      method: "MKCOL",
+      headers: {
+        "Content-Type": "application/xml"
+      },
+      body: `
+      <mkcol xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CS="http://calendarserver.org/ns/" xmlns:ICAL="http://apple.com/ns/ical/">
+        <set>
+          <prop>
+            <displayname>${escapeXml(this.displayname)}</displayname>
+            ${this.description ? `<CAL:calendar-description>${escapeXml(this.description)}</CAL:calendar-description>` : ""}
+            ${this.color ? `<ICAL:calendar-color>${escapeXml(this.color)}</ICAL:calendar-color>` : ""}
+            <CAL:supported-calendar-component-set>
+              <CAL:comp name="VEVENT" />
+            </CAL:supported-calendar-component-set>
+          </prop>
+        </set>
+      </mkcol>
+      `
+    });
+    if (response.status >= 400) {
+      alert(`Error ${response.status}: ${await response.text()}`);
+      return null;
+    }
+    window.location.reload();
+    return null;
+  }
+};
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "principal", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "addr_id", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "displayname", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "description", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "color", 2);
+__decorateClass([
+  n$1()
+], CreateCalendarForm.prototype, "timezones", 2);
+CreateCalendarForm = __decorateClass([
+  t("create-birthday-calendar-form")
+], CreateCalendarForm);
+export {
+  CreateCalendarForm
+};
diff --git a/crates/frontend/public/templates/components/sections/addressbooks_section.html b/crates/frontend/public/templates/components/sections/addressbooks_section.html
index e699b0b..cf2291c 100644
--- a/crates/frontend/public/templates/components/sections/addressbooks_section.html
+++ b/crates/frontend/public/templates/components/sections/addressbooks_section.html
@@ -1,6 +1,6 @@
 <h2>{{user.id }}'s Addressbooks</h2>
 <ul class="collection-list">
-  {% for (meta, addressbook) in addressbooks %}
+  {% for (meta, birthday_cal, addressbook) in addressbooks %}
   <li class="collection-list-item">
     <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}"></a>
     <div class="inner">
@@ -24,9 +24,17 @@
         ></edit-addressbook-form>
         <delete-button trash
           href="/carddav/principal/{{ addressbook.principal }}/{{ addressbook.id }}"></delete-button>
+        {% if !birthday_cal.is_some() %}
+        <create-birthday-calendar-form
+          principal="{{ addressbook.principal }}"
+          addr_id="{{ addressbook.id }}"
+          displayname="{{ addressbook.displayname.as_deref().unwrap_or_default() }} birthdays"
+        ></create-birthday-calendar-form>
+        {% endif %}
       </div>
       <div class="metadata">
         {{ meta.len }} ({{ meta.size | filesizeformat }}) objects, {{ meta.deleted_len }} ({{ meta.deleted_size | filesizeformat }}) deleted objects
+        {{ birthday_cal.is_some() }}
       </div>
     </div>
   </li>
@@ -37,7 +45,7 @@
 {%if !deleted_addressbooks.is_empty() %}
 <h3>Deleted Addressbooks</h3>
 <ul class="collection-list">
-  {% for (meta, addressbook) in deleted_addressbooks %}
+  {% for (meta, birthday_cal, addressbook) in deleted_addressbooks %}
   <li class="collection-list-item">
     <a href="/frontend/user/{{ addressbook.principal }}/addressbook/{{ addressbook.id}}"></a>
     <div class="inner">
diff --git a/crates/frontend/public/templates/pages/user.html b/crates/frontend/public/templates/pages/user.html
index e4c2f88..ce658c2 100644
--- a/crates/frontend/public/templates/pages/user.html
+++ b/crates/frontend/public/templates/pages/user.html
@@ -5,6 +5,7 @@
 <script>
 window.rusticalUser = JSON.parse(document.querySelector('#data-rustical-user').innerHTML)
 </script>
+<script type="module" src="/frontend/assets/js/create-birthday-calendar-form.mjs" async></script>
 <script type="module" src="/frontend/assets/js/create-calendar-form.mjs" async></script>
 <script type="module" src="/frontend/assets/js/edit-calendar-form.mjs" async></script>
 <script type="module" src="/frontend/assets/js/import-calendar-form.mjs" async></script>
diff --git a/crates/frontend/src/lib.rs b/crates/frontend/src/lib.rs
index cee1d06..84f6751 100644
--- a/crates/frontend/src/lib.rs
+++ b/crates/frontend/src/lib.rs
@@ -12,7 +12,7 @@ use http::{Method, StatusCode};
 use routes::{addressbooks::route_addressbooks, calendars::route_calendars};
 use rustical_oidc::{OidcConfig, OidcServiceConfig, route_get_oidc_callback, route_post_oidc};
 use rustical_store::{
-    AddressbookStore, CalendarStore,
+    AddressbookStore, CalendarStore, PrefixedCalendarStore,
     auth::{AuthenticationProvider, middleware::AuthenticationLayer},
 };
 use std::sync::Arc;
@@ -39,7 +39,11 @@ use crate::routes::{
 #[cfg(not(feature = "dev"))]
 use assets::{Assets, EmbedService};
 
-pub fn frontend_router<AP: AuthenticationProvider, CS: CalendarStore, AS: AddressbookStore>(
+pub fn frontend_router<
+    AP: AuthenticationProvider,
+    CS: CalendarStore,
+    AS: AddressbookStore + PrefixedCalendarStore,
+>(
     prefix: &'static str,
     auth_provider: Arc<AP>,
     cal_store: Arc<CS>,
diff --git a/crates/frontend/src/routes/addressbooks.rs b/crates/frontend/src/routes/addressbooks.rs
index f0707fc..4b446ef 100644
--- a/crates/frontend/src/routes/addressbooks.rs
+++ b/crates/frontend/src/routes/addressbooks.rs
@@ -1,10 +1,12 @@
-use std::sync::Arc;
-
 use askama::Template;
 use askama_web::WebTemplate;
 use axum::{Extension, extract::Path, response::IntoResponse};
 use http::StatusCode;
-use rustical_store::{Addressbook, AddressbookStore, CollectionMetadata, auth::Principal};
+use rustical_store::{
+    Addressbook, AddressbookStore, Calendar, CollectionMetadata, PrefixedCalendarStore,
+    auth::Principal,
+};
+use std::sync::Arc;
 
 use crate::pages::user::{Section, UserPage};
 
@@ -18,11 +20,11 @@ impl Section for AddressbooksSection {
 #[template(path = "components/sections/addressbooks_section.html")]
 pub struct AddressbooksSection {
     pub user: Principal,
-    pub addressbooks: Vec<(CollectionMetadata, Addressbook)>,
-    pub deleted_addressbooks: Vec<(CollectionMetadata, Addressbook)>,
+    pub addressbooks: Vec<(CollectionMetadata, Option<Calendar>, Addressbook)>,
+    pub deleted_addressbooks: Vec<(CollectionMetadata, Option<Calendar>, Addressbook)>,
 }
 
-pub async fn route_addressbooks<AS: AddressbookStore>(
+pub async fn route_addressbooks<AS: AddressbookStore + PrefixedCalendarStore>(
     Path(user_id): Path<String>,
     Extension(addr_store): Extension<Arc<AS>>,
     user: Principal,
@@ -43,22 +45,42 @@ pub async fn route_addressbooks<AS: AddressbookStore>(
 
     let mut addressbook_infos = vec![];
     for addressbook in addressbooks {
+        let birthday_id = format!("{}{}", AS::PREFIX, &addressbook.id);
+        let birthday_cal = match addr_store
+            .get_calendar(&addressbook.principal, &birthday_id, true)
+            .await
+        {
+            Ok(cal) => Some(cal),
+            Err(rustical_store::Error::NotFound) => None,
+            err => Some(err.unwrap()),
+        };
         addressbook_infos.push((
             addr_store
                 .addressbook_metadata(&addressbook.principal, &addressbook.id)
                 .await
                 .unwrap(),
+            birthday_cal,
             addressbook,
         ));
     }
 
     let mut deleted_addressbook_infos = vec![];
     for addressbook in deleted_addressbooks {
+        let birthday_id = format!("{}{}", AS::PREFIX, &addressbook.id);
+        let birthday_cal = match addr_store
+            .get_calendar(&addressbook.principal, &birthday_id, true)
+            .await
+        {
+            Ok(cal) => Some(cal),
+            Err(rustical_store::Error::NotFound) => None,
+            err => Some(err.unwrap()),
+        };
         deleted_addressbook_infos.push((
             addr_store
                 .addressbook_metadata(&addressbook.principal, &addressbook.id)
                 .await
                 .unwrap(),
+            birthday_cal,
             addressbook,
         ));
     }