caa a22 4500 469096306 CHVBK 20180323133031.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF00317380 doi (NATIONALLICENCE)springer-10.1007/BF00317380 Extirpation of alternative prey during a small rodent crash [Elektronische Daten] [Charles Drost, Reed McCluskey] Summary: We document two episodes, in different years, of Barn Owls (Tyto alba) preying on a winter population of Burrowing Owls (Athene cunicularia) on a southern California island. The predation in each case followed a marked shift in the diet of the Barn Owls, due to the cyclic decline of their normal small mammal prey. Heavy predation in the first year resulted in the extirpation of the Burrowing Owls on the island. Such heavy predation on alternative prey species is commonly reported in cyclic predator-prey systems, however this is the first documented case of extirpation of the alternative prey. Complete elimination of any prey species by terrestrial predators is, in fact, very rare. Springer-Verlag, 1992 Owls nationallicence Predation nationallicence Population cycles nationallicence Alternative prey nationallicence Extirpation nationallicence Drost Charles Division of Environmental Studies, University of California, 95616, Davis, CA, USA aut McCluskey Reed 7405 Santa Fe Trail NW, 87120, Albuquerque, NM, USA aut Oecologia Springer-Verlag 92/2(1992-11-01), 301-304 0029-8549 92:2<301 1992 92 442 https://doi.org/10.1007/BF00317380 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317380 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Drost Charles Division of Environmental Studies, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 700 1- McCluskey Reed 7405 Santa Fe Trail NW, 87120, Albuquerque, NM, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 92/2(1992-11-01), 301-304 0029-8549 92:2<301 1992 92 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer