Anorexic chicken

Carving a roast chicken is one of my only skills in the kitchen. I am extremely handy with using a blade to get every morsel of meat from the bones. Last night something happened, I was astounded. Legs and wings were removed with speedy precision and then my knife went to carve the breast. I scraped measly amounts of meat from the rib cage and just stood confused for a few minutes. What was wrong with this chicken? Where was all the meat? Why would any decent store sell anorexic chickens?

My husband walked past the table and noticed my confusion, 

"It's upside down"