Zeitschriftenartikel
Conrad, K. F.; Johnston, P. V.; Crossman, C.; Kempenaers, B.; Robertson, R. J.; Wheelwright, N. T.; Boag, T.: High levels of extra-pair paternity in an isolated, low-density, island population of tree swallows (Tachycineta bicolor). Molecular Ecology
10 (5), S. 1301 - 1308 (2001)