Modifying this control will update this page automatically

Show contactsβ birthdays in Calendar on Mac
When you add birthdays to contact cards, you can see the birthdays on the Birthdays calendar in the Calendar app β just make sure Calendar settings are set to show the Birthdays calendar.
Siri: When you add a birthday to someoneβs contact card, you can say something like: βWhen is Janeβs birthday?β Learn how to use Siri.
Go to the Calendar app
on your Mac.
Choose Calendar > Settings.
Click General, then select βShow Birthdays calendarβ.
The Birthdays calendar is updated automatically when you add or remove birthdays in Contacts.