"Scientists have found something strange has been happening among sensitive bird species in the Brazilian Amazon in recent years.

Not only were the birds declining in number, but their bodies were also shrinking in size.

"We found that size is not only shrinking for those sensitive species — it was declining for everyone," said researcher Vitek Jirinec of Louisiana State University.

Jirinec's findings are contained in a new study published in the journal Science Advances last Friday."

Christopher Intagliata and Lauren_Hodges report for NPR November 15, 2021. [2]