The Eurasian lynx (Lynx lynx) often cover its prey to protect it from being scavenged by other animals. In this study, we investigated the factors influencing lynx prey caching behavior. Data was collected in the Dinaric mountains and the Alps in Slovenia, through systematic monitoring of lynx kills and recording of specific parameters at the kill sites, including the signs of covering prey. A total of 452 kills were analyzed, and for 330 of them, we were able to determine whether the prey was covered by a lynx or not. Out of these, 162 kills were covered, while 168 were not covered. Lynx cached their prey more frequently outside the vegetation season (48.5%) than during vegetation season (26,0%). Females were more often exhibiting caching behavior, as they covered their prey on 60.9% of all checked kills, compared to males (41.2%). Statistical analysis showed that prey mass and canopy cover did not significantly influence lynx caching behavior. We recorded that covering of the kills helped protecting prey remains against avian scavenger as they were less likely to visit a kill if it was covered. Additionally, bear presence as a kleptoparasite or even local bear density at the kill sites was not confirmed as a significant factor. Thus, we conclude that caching behavior in lynx developed primarily as a defense against kleptoparasitism by avian scavengers. These findings contribute to a better understanding of the lynx feeding behavior and its interspecific interactions.
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