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Content with tag aves .

Use of avian GPS tracking to mitigate human fatalities from bird strikes caused by large soaring birds

A research team from the Doñana Biological Station-CSIC and the Miguel Hernández University tracked griffon and cinereous vultures and white storks to study their flight patterns
These species mostly fly under 1,300 meters so the flight altitudes overlapped the legal flight altitude limit set for general aviation, which is 900 meters.

More than have a million birds registered in Doñana during winter

Last January, the Natural Processes Monitoring Team (ICTS-RBD) of the Doñana Biological Station carried out the International Waterbird Census during winter in the Guadalquivir Marshes (Doñana Natural Space, adjacent unprotected areas and Brazo del Este Natural Site), coordinated by Wetlands International. The total estimated number of birds registered was around 532 thousand, belonging to 91 different species.

Unexpected bird–feather mite associations revealed by DNA metabarcoding uncovers a dynamic ecoevolutionary scenario

The high relevance of host–switching for the diversification of highly host–specific symbionts (i.e., those commonly inhabiting a single host species) demands a better understanding of host–switching dynamics at an ecological scale. Here, DNA metabarcoding was used to study feather mites on passerine birds in Spain, sequencing mtDNA (COI) for 25,540 individual mites (representing 64 species) from 1,130 birds (representing 71 species).

Long-distance dispersal by migratory waterbirds

Modern literature on plant dispersal by birds focuses mainly on the importance of frugivory and scatter-hoarding, yet recent studies show that endozoochory by migratory waterbirds is an important mechanism of long-distance dispersal for a broad range of plants. Nevertheless, there is a lack of empirical field studies that identify the plants dispersed by waterbirds in a comprehensive manner. In particular, so far there are no detailed studies of the level of spatial variation in the plant...

Spatial segregation important mechanism for reducing competition in petrels

Según la teoría del nicho ecológico, existen mecanismos que permiten la coexistencia de los organismos que de otro modo competirían por las mismas presas y otros recursos. Cómo las aves marinas de pequeño tamaño compiten por los recursos en la época no reproductiva había sido poco estudiado hasta ahora. Por primera vez se aborda papel potencial de la segregación espacial, medioambiental (cambio de hábitat) y trófica (cambios isotópicos) en la partición del nicho ecológico de cuatro aves...
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