BUSCADOR RECOLECTA

This dataset was used to analyze survival probabilities of Egyptian Vultures at Canary Islands from 1998 to 2017., We acknowledge financial support through the projects REN 2000–1556 GLO, CGL2004-00270/BOS, CGL2009-12753-C02-02, CGL2012-40013-C02-01, and CGL2015-66966-C2-1-2-R (Spanish Ministry of Economy and Competitiveness and EU/FEDER)., The data file contains capture, resight and recovery histories of Egyptian vultures at Canary Islands (Fuerteventura and Lanzarote) during breeding seasons 1998 to 2017. This file contains one line per individual; one column per encounter occasion (from column 1 to 20 were code “0” indicate that the individual was not observed in a particular year; code “1” is used for individuals detected (marked at capture or resighted) with both coloured and steel metal butt-end rings; code “2” is used for individuals detected (marked at capture or resighted) with coloured and steel metal lock-on rings; code “3” is used for individuals resighted only retaining their coloured rings, code “4” is used for individuals resighted only retaining steel metal butt-end rings; and code “5” is used for individuals recovered freshly dead. There are six further columns (21 to 26) indicating the group (starting age at marking form 1-year-old to ≥6 year-old) for each individual., No

File_SIA_Condor Isotopic values of historical and modern Andean condors and their main trophic resources collected in the Patagonian area, Over the last century, marine mammals have been dramatically reduced in the world’s oceans. We examined evidence that this change caused dietary and foraging pattern shifts of the Andean condor (Vultur gryphus) in Patagonia. We hypothesized that, after the decrease in marine mammals and the increase in human use of coastlines, condor diet changed to a more terrestrial diet which, in turn, influenced their foraging patterns. We evaluated the diet by means of stable isotope analysis (δ13C, δ15N and δ34S) of current (last decade) and historical (1841-1933) feathers. We further evaluated the movement patterns of 23 condors using satellite tracking of individuals. Condors reduced their use of marine-derived prey in recent compared to historical times from 33±13% to less than 8±3% respectively, however, they still breed close to the coast. The average distance between the coast and nests was 62.5 km. Some nests were located close to the sea, but some birds forage up to 86k m from nesting sites and must cross over the mountain range to find food. The worldwide reduction in marine mammal carcasses, especially whales, may have major consequences on the foraging ecology of scavengers as well as on the flux of marine inputs within terrestrial ecosystems., Peer reviewed