Zahavi, Amotz (1974). "Communal nesting by the Arabian Babbler: A case of individual selection". Ibis. 116: 84–87. doi:10.1111/j.1474-919X.1974.tb00225.x.
Ward, Peter; Zahavi, Amotz (1973-10-01). "The Importance of Certain Assemblages of Birds as 'Information-Centres' For Food-Finding". Ibis. 115 (4): 517–534. doi:10.1111/j.1474-919x.1973.tb01990.x.