Autumn Migration of Juvenile Short-Toed Eagles Circaetus gallicus from Southeastern Spain
[摘要] ThisstudyprovidesthefirstdescriptionofautumnmigrationroutesofjuvenileShort-toedEaglesCircaetusgallicustaggedinsoutheasternSpain.ThreenestlingsweretaggedwithArgos/GPSsatellitetransmitters,ofwhichtworeachedtheirwinteringgroundsinMali,closetotheInnerNigerDelta.Onset,durationandroutesofmigrationdifferedbetweenthetwoindividuals,butbotheventuallysettledinapproximatelythesamearea(c.170kmapart).Thewinteringgroundswerelocatedmorethan2500kmawayfromthebreedingsites,althoughthebirdscoveredsome3800–4700kmtoreachthewinteringarea.Theobserveddifferencesinmigrationstrategiesmayberelatedtojuvenileeaglesmigrating,ornot,inmixedflockswithadults;thelatterdepartearlierfromthebreedinggroundsandfollowamoredirectroutetothewinteringgrounds.
[发布日期] [发布机构]
[效力级别] [学科分类] 动物科学
[关键词] GPS [时效性]
