Palabras clave
Ecuador
Colombia
Western Andes
elevation
range aves
Andes Occidentales
Ecuador
elevación
distribución
Cómo citar
Resumen
Research suggests that bird elevational ranges may be shifting upslope because of deforestation, habitat fragmentation or climate change. I present observations of four bird species that were encountered at a private reserve in Ecuador more than 300 meters above their known maximum altitudes in Colombia and Ecuador, including two that were recorded at altitudes higher than globally recorded maximums.
Citas
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