u/Legitimate-Ad3277

I've noticed within the last 3 or 4 weeks that I'm getting less postcards than what I used to, but I still have the same amount of traffic with birds. I'm set on frenzy but still I only get about two postcards a day when I used to get at least six or seven. Is anybody else having this problem? I've gone to my live stream and have seen birds on the feeder but not a postcard taken.