The sound of the Musician Wren – a South American bird known for its tuneful whistle – is fading from the Amazon rainforest, a new study reveals.
The species (cyphorhinus arada) is native to the Amazon, which is the world's largest rainforest at about 2.1 million square miles.
But it's is now 'seldom seen' and has declined in numbers since field studies in the 1980s in areas that haven't even suffered deforestation or been directly impacted by humans.
US researchers fear halting deforestation may not be enough to prevent the extinction of bird species like the Musician Wren that feed on forest floor-dwelling insects.
While the exact causes are unknown, the experts think it's possible that global climate change could be killing off the birds' prey.
Other threatened species previously found in abundance in the Amazon include the Wing-banded Antbird (myrmornis torquata), known for its specific foraging strategy of tossing …