Celebrate pet birthdays?

I also celebrate the "adoption day", since I have no idea when my bird was hatched. He's a rescue, and I don't even know how old he is, let alone his birthday. It's easy to remember his adoption day, though, since I brought him home exactly two weeks before my own birthday. I don't make a huge deal out of it, but I usually give him an extra toy to chew on and some extra millet seed to snack on (his favorite treat). I also try to spend a little extra time with him as well.