A study led by the Doñana Biological Station (EBD-CSIC) found that fruit-eating birds (frugivorous) in Doñana have experienced negative changes in the last 40 years: a decrease in their abundance, a lower fat reserve, and advances in their migratory timing.
? This could be due to vegetation shifts and increasing temperatures associated with climate change. Changes in the timing of migratory birds’ arrivals and departures can lead to a lack of synchronization between birds and fruit...

A research team led by Doñana Biological Station – CSIC studied how wind fields and geographical barriers shape the trans-African migrations of Eleonora’s falcons between the Canary Islands and Madagascar
The results show that falcons zigzag across Africa because they maximize wind support through oppossing wind fields, across open ocean and across the Sahara, and then compensate for those displacements through weak or favourable wind fields

Soaring landbirds typically exploit atmospheric uplift as they fly overland, displaying a highly effective energy-saving locomotion. However, large water bodies lack thermal updrafts, potentially becoming ecological barriers that hamper migration. The effects of a sea surface on the migratory performance of GPS-tagged white storks (Ciconia ciconia) were assessed before, during and after they crossed the straits of Gibraltar. Oversea movements involved only flapping and gliding and were...

Large-scale environmental forces can influence biodiversity at different levels of biological organization. Climate, in particular, is often associated with species distributions and diversity gradients. However, its mechanistic link to population dynamics is still poorly understood. Here, the full mechanistic path by which a climatic driver, the Atlantic trade winds, determines the viability of a bird population is unravelled.