 Social learning also enables stable inheritance of many characters.Cross-fostering of great tit and blue tit chicks show that social learning can result in stable inheritance of species-typical foraging behaviors (foraging height, prey type, prey size, foraging method) as well as nest site choice, alarm calls, songs, and mate choice.Recent killer whale research has demonstrated the divergence of orcas into several species mediated by learned and socially transmitted differences in diets.