Butterfly numbers have dropped by one third in the US over 20 years because of climate change and habitat destruction – and other insects may be declining too
Source:
https://www.newscientist.com/article/2209171-butterfly-numbers-fell-by-one-third-in-the-us-over-last-two-decades/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home