Sekercioglu, C.H. (2007). «Conservation ecology: area trumps mobility in fragment bird extinctions». Current Biology17 (8): R283–R286. PMID17437705. doi:10.1016/j.cub.2007.02.019.
Dondini, G.; Vergari, S. (2000). «Carnivory in the greater noctule bat (Nyctalus lasiopterus) in Italy.». Journal of Zoology251: 233–236. doi:10.1111/j.1469-7998.2000.tb00606.x.
Hawkes, Lucy A.; Sivananinthaperumal Balachandran; Nyambayar Batbayar; Patrick J. Butler; Peter B. Frappell; William K. Milsom; Natsagdorj Tseveenmyadag; Scott H. Newman; Graham R. Scott; Ponnusamy Sathiyaselvam; John Y. Takekawa; Martin Wikelski; Charles M. Bishop (31. mai 2011). «The trans-Himalayan flights of bar-headed geese (Anser indicus)». Proceedings of the National Academy of Sciences. doi:10.1073/pnas.1017295108. Arkivert frå originalen 18. september 2011. Henta 13. september 2011.
Edwards, Darryl B.; Forbes, Mark R. (2007). «Absence of protandry in the spring migration of a population of Song Sparrows Melospiza melodia.». Ibis149 (4): 715–720. doi:10.1111/j.1474-919X.2007.00692.x.
Sekercioglu, C.H. (2007). «Conservation ecology: area trumps mobility in fragment bird extinctions». Current Biology17 (8): R283–R286. PMID17437705. doi:10.1016/j.cub.2007.02.019.
Hawkes, Lucy A.; Sivananinthaperumal Balachandran; Nyambayar Batbayar; Patrick J. Butler; Peter B. Frappell; William K. Milsom; Natsagdorj Tseveenmyadag; Scott H. Newman; Graham R. Scott; Ponnusamy Sathiyaselvam; John Y. Takekawa; Martin Wikelski; Charles M. Bishop (31. mai 2011). «The trans-Himalayan flights of bar-headed geese (Anser indicus)». Proceedings of the National Academy of Sciences. doi:10.1073/pnas.1017295108. Arkivert frå originalen 18. september 2011. Henta 13. september 2011.
Gill RE, Tibbitts TL, Douglas DC, Handel CM, Mulcahy DM, Gottschalck JC, Warnock N, McCaffery BJ, Battley PF, Piersma T. (2009) Extreme endurance flights by landbirds crossing the Pacific Ocean: ecological corridor rather than barrier? Proc Biol Sci.276(1656):447-57. PDF
Hawkes, Lucy A.; Sivananinthaperumal Balachandran; Nyambayar Batbayar; Patrick J. Butler; Peter B. Frappell; William K. Milsom; Natsagdorj Tseveenmyadag; Scott H. Newman; Graham R. Scott; Ponnusamy Sathiyaselvam; John Y. Takekawa; Martin Wikelski; Charles M. Bishop (31. mai 2011). «The trans-Himalayan flights of bar-headed geese (Anser indicus)». Proceedings of the National Academy of Sciences. doi:10.1073/pnas.1017295108. Arkivert frå originalen 18. september 2011. Henta 13. september 2011.