Zeitschriftenartikel
Hahn, T. P.; Cornelius, J. M.; Sewall, K. B.; Kelsey, R. T.; Hau, M.; Perfito, N.: Environmental regulation of annual schedules in opportunistically-breeding songbirds: Adaptive specializations, or variations on a theme of white-crowned sparrow? General and Comparative Endocrinology
157 (3), S. 217 - 226 (2008)