Nearly half of the world's birds are on the decline, which experts say is a serious threat to ecosystems

Birds are all around us, every day, and they play a crucial role in the health of our planet. But in the past 50 years nearly three billion birds have disappeared across North America and the European Union alone. And experts are worried that it could be a bigger sign about the health of our ecosystems.

source https://www.cbc.ca/news/science/birds-declines-1.6610220?cmp=rss