Do horses eat birds?

Very rarely. Horses cannot digest meat, but very occasionally horses killing and eating small birds or mammals has been recorded. Some people believe that this may indicate a salt deficiency. (Horses can also get some nutrition from some forms of animal protein, with eggs being traditionally fed to racehorses and, apparently, Icelanders feeding fish meal.

Horses also may playfully (or accidentally) kill small animals, but they generally do not eat them.