Is there a connection between weather at departure sites, onset of migration and timing of soaring‐bird autumn migration in Israel?

摘要: Aims Different aspects of soaring-bird migration are influenced by weather. However, the relationship between weather and onset migration, particularly in autumn, is not clear. Although long-term counts often unavailable near breeding areas many soaring birds western Palaearctic, has been systematically monitored Israel, a region where populations from large geographical converge. This study tests several fundamental hypotheses regarding explores connection weather, arrival at distant site. Location Globally gridded meteorological data north-eastern Europe were used as predictive variables relation to migrants Israel. Methods Inverse modelling was temporal spatial influence on initiation based autumn Numerous combinations duration (temperature, sea-level pressure precipitable water) tested with different models for sensitivity. Results The day Israel white storks, honey buzzards, Levant sparrowhawks lesser spotted eagles significantly strongly related conditions area days or even weeks before cumulative number value above below threshold performed better than other tested. Models provided reliable estimates each species. Main conclusions triggers grounds differed species deteriorating living migratory flight conditions. Soaring sensitive same period every year their response appears be constrained annual routine.