Can someone explain to me why the following is happening? I have standard-issue Calendar, of course, but I use Fantastical, both desktop and iOS. Why do birthdays show up twice? I get two instances of "so-and-so's birthday" in each application. This didn't happen before I went to Yosemite, so I've been wondering if the update broke something or simply reconfigured/defaulted some setting that I've missed. (It's been so long since I set my Calendar prefs, I actually found it quite confusing to figure out. Everything has always just worked properly without my fiddling with it until now.) Any thoughts would be appreciated.