Primera localización de un dormidero de milano real Milvus milvus L., 1758 en un eucaliptal en Álava

During the 2020-2021 census to determine the wintering population of Red kite (Milvus milvus) in the Iberian peninsula by counting the number of communal roosts, one such roost was observed in a small reforested area of eucalyptus (genus Eucalyptus) in the northwest of the province of Álava (Basque Country-Spain). Although roosts located on this kind of arboreal substrate are rare, our observation suggests the hypothesis that Red kites will use eucalyptus if the atmospheric conditions are particularly adverse. Therefore, we propose that the distribution and winter ecology of Iberian breeding populations of Red kite be clarified with urgency, the study of which is hampered by the arrival of a multitude of conspecifics of central and northern-European origin in winter