Martín-Vivaldi, Manuel; Palomino, José J.; Soler, Manuel (2004). "Strophe length in spontaneous songs predicts male response to playback in the Hoopoe Upupa epops". Ethology. 110 (5): 351–362. doi:10.1111/j.1439-0310.2004.00971.x.
Hildebrandt, B.; Schaub, M. (2018). "The effects of hatching asynchrony on growth and mortality patterns in Eurasian Hoopoe Upupa epops nestlings". Ibis. 160 (1): 145–157. doi:10.1111/ibi.12529.
Battisti, A; Bernardi, M.; Ghiraldo, C. (2000). "Predation by the hoopoe (Upupa epops) on pupae of Thaumetopoea pityocampa and the likely influence on other natural enemies". Biocontrol. 45 (3): 311–323. doi:10.1023/A:1009992321465. S2CID11447864.
Battisti, A; Bernardi, M.; Ghiraldo, C. (2000). "Predation by the hoopoe (Upupa epops) on pupae of Thaumetopoea pityocampa and the likely influence on other natural enemies". Biocontrol. 45 (3): 311–323. doi:10.1023/A:1009992321465. S2CID11447864.