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Non-migratory songbirds could be under threat from a warming climate, according to the findings of a 15-year study.
The University of Queensland's Dr. Brad Woodworth, who led the study with researchers from the University of Windsor and University of Guelph in Canada, said the research showed that hot weather reduced the survival of tropical birds.
Study - Increases - Temperature - Persistence - Animals
"Our study suggests that further increases in temperature may threaten the persistence of tropical animals accustomed to hot environments – unless they are able to shift to cooler areas," Dr. Woodworth said.
The research team studied a population of rufous-and-white wrens living in the Guanacaste Conservation Area in Costa Rica.
Year - Birds - Nets - Animal - Combination
Each year, they captured birds in mist nets, gave each animal a distinctive combination of coloured leg bands, and then surveyed the population to see which birds were still alive and which had perished.
"We found that wren survival did indeed vary with climate – so when temperatures were high, the wrens suffered higher mortality," he said.
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