MAIN REASON WHY I HANG A BIRD FEEDER

This is a bad pic of a young (I think it's a male.) Northern Cardinal (Double right click on the pic.) with a beak birth defect.

Although a fledgling cardinal at my feeder is the main reason why I maintain a feeder, I wonder whether their (my Northern Cardinals) reliance on the diet I provide could be causing the birth defect. This is a second beak birth defect I've seen since mid summer of 2010. (The first one was more certainly a male.)