Prior to the "incident" that happened when LO was born (October), at Christmas when we visit (flight/half country away) I always took home a present and card from them for February/my Birthday each year.
MIL says everything is ok between us (to DH).....yet I didn't even hear from them this year....hmmm.
I'm totally not bothered, as it makes it less awkward (to feel I have to say something back) but just wondering if your ILs wish you a Happy Birthday?