Data from: Ongoing changes in the avifauna of La Selva Biological Station, Costa Rica: twenty-three years of Christmas Bird Counts

负责人：

关键词：

Christmas Bird Counts;physiological tolerance;extirpation;citizen science;Dispersal;specialization;Aves;climate change

DOI：

doi:10.5061/dryad.65v10

摘要：

ange. Analyses of 23 years (1989–2011) of Christmas Bird Counts reveal that 63 of 202 species have increased whereas 44 are declining, with declines occurring mor