Outlook.com Birthdays

[killing joke]

Hey @ all,

I added my outlook.com calendar to my MM. All entries are displayed as they should.
Unfortunately the birthdays are “imported” from the Outlook contacts and all birthdays are displayed in an extra calender called “birthdays” which I can´t share via ICS, as the extra calender is not shown at “Settings” - “Calendar” - “Shared Calendar”.

Any suggestions from your side?

Thanks for every advice. Stay safe and healthy.