Predation Risk of Tawny Owl Strix aluco Nests in Relation to Altitude, Breeding Experience, Breeding Density and Weather Conditions

[摘要] NestpredationwasstudiedinapopulationofTawnyOwlsStrixalucointheDuna-IpolyNationalPark,Hungaryduringtheperiod1992–2009,andrelatedtothechoiceofnestingsitesatdifferentaltitudes,thebreedingexperienceofmales,andweatherconditions.Theuseofnestingsitesathighelevationsreducedtheriskofnestpredationincomparisontolowerelevations,wherebreedingterritoriesoccuratahigherdensity.Also,theriskofnestpredationdecreasedasthelocalbreedingexperienceofmalesincreased.Adverseweatherconditions,i.e.long-lastingsnowcover,increasingbreedingdensity,andlaterlayingdatesenhancedtheprobabilityofbreedingfailurebynestpredation.Broodsweredepredatedinthenestlingperiodratherthanduringincubation.

[学科分类] 动物科学

[关键词] Tawny Owl