Birthdays in contacts?

[Guest Svensational]

Hi,

I'm using CyanogenMod 11-20150102-NIGHTLY-u8815 (Android 4.4.4) and somehow the default contacts app seems to lack some features. I've seen that on other devices people can add birthdays or anniversaries to their contacts, but I can't. Is this because I don't sync my contacts with my google account, or is this feature simply missing in CyanogenMod for G300?