Relative contribution of local demography and immigration in the recovery of a geographically-isolated population of the endangered Egyptian vulture

Sex- and age-dependent patterns of survival and breeding success in a long-lived endangered avian scavenger

“…Importantly, female Egyptian vultures in our study population showed an alarmingly low local survival in comparison with the survival rates estimated for adults breeding in other European populations and other large body-sized scavengers83738. Higher rates of female mortality as that found here have been claimed as the main factor leading to male-skewed adult sex-ratios in many bird species with balanced sex-ratios at birt39.…”

“…Pre-breeder survival varies with age: it increases up to 4 yrs of age and then decreases at 5 yrs of age when birds acquire adult plumage, abandon the communal lifestyle of juveniles, and usually begin to look for a breeding territory25. Little is known, however, about age- and sex-dependent recruitment patterns, breeding success and breeder survival2837.…”

Designing cost-effective capture-recapture surveys for improving the monitoring of survival in bird populations

“…Note here that simulating a decrease in survival would have led to similar results. The slope of the conservation effect was scaled in an additive way among ages and/or territorial status according to empirical estimates from populations having benefited from conservation plans 195 (adult survival rate increased from 0.77 to 0.88 for Bonelli's eagle, Chevalier et al 2015; from 0.84 to 0.93 for Egyptian vulture, Lieury et al 2015). This increase in survival rate corresponds to an increase of approximately 1.0 on the logit scale.…”

“…The identification of breeding birds is 135 typically obtained when monitoring breeding success. For our model species for ON monitoring, we combined life-history and survey characteristics of two long-lived diurnal raptors, the Bonelli's eagle Aquila fasciata and the Egyptian vulture Neophron percnopterus (Lieury et al 2015(Lieury et al , 2016. Monitoring typically consists of repeated visits of known territories during the breeding season for checking whether breeding occurs and the identity of breeding 140 birds, and eventually ringing chicks.…”

Dispersal of Egyptian VulturesNeophron percnopterus:the first case of long-distance relocation of an individual from France to Sicily

“…Here, we report the first documented long-distance resighting of an Egyptian Vulture from the French This observation is important because it introduces a new perspective for the conservation of the small and endangered Sicilian population of Egyptian Vultures, providing the first evidence that the Italian population could receive new input from other countries to facilitate its persistence. Moreover, the presence of this species near a feeding station highlights the importance of supplementary feeding interventions for the conservation of Egyptian Vultures (see eg Sarà et al 2009, López-López et al 2014, Arrondo et al 2015, Lieury et al 2015, which is particularly important at stopover sites during migration.…”