Lol, ponies have been filmed hunting down and eating ground birds, including chickens, in real life (check YouTube), who’s to say they don’t serve chicken in Equestria? Pinkie Pie is a confectioner, not a chef, just because she doesn’t serve up nugs doesn’t mean they don’t exist, and then there’s Sweetie Belle and those eggs. Hmm, just what does Fluttershy really do when her hens are too old to lay anymore?