Weller, Milton W. (1997). "Review of Ruddy Ducks and Other Stifftails: Their Behavior and Biology". The Journal of Wildlife Management. 61 (4): 1454–1456. doi:10.2307/3802163. JSTOR3802163.
Sanchez, M.I.; Green, A.J.; Dolz, J.C. (November 2000). "The diets of the White-headed Duck Oxyura leucocephala, Ruddy Duck O. jamaicensis and their hybrids from Spain". Bird Study. 47 (3): 275–284. Bibcode:2000BirdS..47..275S. doi:10.1080/00063650009461187. hdl:10261/45238.
Tome, Michael W.; Wrubleski, Dale A. (February 1988). "Underwater Foraging Behavior of Canvasbacks, Lesser Scaups, and Ruddy Ducks". The Condor. 90 (1): 168–172. doi:10.2307/1368445. JSTOR1368445.
Sanchez, M.I.; Green, A.J.; Dolz, J.C. (November 2000). "The diets of the White-headed Duck Oxyura leucocephala, Ruddy Duck O. jamaicensis and their hybrids from Spain". Bird Study. 47 (3): 275–284. Bibcode:2000BirdS..47..275S. doi:10.1080/00063650009461187. hdl:10261/45238.
harvard.edu
ui.adsabs.harvard.edu
Sanchez, M.I.; Green, A.J.; Dolz, J.C. (November 2000). "The diets of the White-headed Duck Oxyura leucocephala, Ruddy Duck O. jamaicensis and their hybrids from Spain". Bird Study. 47 (3): 275–284. Bibcode:2000BirdS..47..275S. doi:10.1080/00063650009461187. hdl:10261/45238.
homesteadontherange.com
hsotr (2023-08-15). "Ruddy Duck". Homestead on the Range. Retrieved 2024-10-14.
Weller, Milton W. (1997). "Review of Ruddy Ducks and Other Stifftails: Their Behavior and Biology". The Journal of Wildlife Management. 61 (4): 1454–1456. doi:10.2307/3802163. JSTOR3802163.
Siegfried, W. Roy (1976). "Social Organization in Ruddy and Maccoa Ducks". The Auk. 93 (3): 560–570. JSTOR4084957.
Siegfried, W. Roy (1976). "Breeding Biology and Parasitism in the Ruddy Duck". The Wilson Bulletin. 88 (4): 566–574. JSTOR4160826.
Tome, Michael W.; Wrubleski, Dale A. (February 1988). "Underwater Foraging Behavior of Canvasbacks, Lesser Scaups, and Ruddy Ducks". The Condor. 90 (1): 168–172. doi:10.2307/1368445. JSTOR1368445.