A forty year study on a remote Antarctic island shows that while populations of two penguin species are declining, while a third is increasing. Analysis of census data from Signy Island in the South Orkney Islands reveals that, between 1978 and 2016, the number of chinstrap penguin pairs declined by nearly 70%.
A number of penguin species found in western Antarctica are declining as a result of a fall in the availability of krill, a study has suggested. Researchers, examining 30 years of data, said chinstrap and Adelie penguin numbers had been falling since 1986.