Eleonora’s Falcon Falco eleonorae is a migratory raptor, well-known for its delayed breeding period. Owing to its great mobility, current information on its distribution pattern during the pre-breeding period is rather sporadic, mainly based on field observations and only one telemetry study. Likewise, the species’ ranging activity during the breeding period has not been thoroughly investigated due to methodological limitations of the approaches implemented in previous studies, again amounting to only two telemetry studies in recent years. In this study we aimed to provide a comprehensive overview of the species’ ranging activity at its breeding grounds based on telemetry. Utilizing GPS data from six adult females originating from the core of the species’ breeding range we explored broad- and fine-scale activity patterns while at their breeding grounds. Our results indicated that during the pre-breeding period the falcons visited high biodiversity areas lying hundreds of kilometres away from their colonies, exhibiting site-fidelity, as shown for falcons from other breeding colonies in the past. During the breeding period the falcons roamed at an average distance of 17 km from their nesting sites, but their ranging activity could be observed up to 130 km. In accordance with the species’ breeding biology, the falcons tended to perform longer trips as the nestlings became more independent. The temporal pattern of ranging activity fitted well with the diurnal variability of the autumn migration flux. Furthermore, nest attendance tended to decrease in windy conditions and as the season progressed, and to increase when southerly winds blew. Despite the low number of tracked falcons, our study set a reference basis for future studies highlighting the importance of specific (protected) areas during the pre-breeding period and providing the first assessment of the movement ecology of the species during the pre-breeding and breeding period in Greece.

埃莱奥诺拉的猎鹰Falco eleonorae是一种迁徙的猛禽，以其延迟的繁殖期而闻名。由于其巨大的流动性，目前关于其在繁殖前时期的分布模式的信息相当零星，主要基于实地观察和仅一项遥测研究。同样，由于先前研究中实施的方法的方法学限制，该物种在繁殖期间的测距活动尚未得到彻底调查，近年来仅进行了两项遥测研究。在这项研究中，我们旨在基于遥测技术全面概述该物种在其繁殖地的测距活动。利用来自该物种繁殖范围核心的六名成年雌性的 GPS 数据，我们在其繁殖地探索了广泛和精细的活动模式。我们的研究结果表明，在繁殖前阶段，猎鹰访问了距其栖息地数百公里的高生物多样性区域，表现出对地点的保真度，正如过去其他繁殖地的猎鹰所展示的那样。在繁殖期间，猎鹰在距筑巢地点平均 17 公里的地方漫游，但它们的测距活动可以观察到 130 公里。根据该物种的繁殖生物学，随着雏鸟变得更加独立，猎鹰往往会进行更长时间的旅行。测距活动的时间模式与秋季迁移通量的日变化吻合较好。此外，在有风的条件下和随着季节的进行，巢穴的数量往往会减少，而当南风吹来时，巢穴的数量会增加。尽管被追踪的猎鹰数量很少，