If you are in the UK, have a go at counting the butterflies in your garden, local park or anywhere you fancy. Details in the link here
You only need 15 minutes to sit and count. Butterflies are very sensitive to any change in the environment, a decline in their numbers can be an early indicator of other wildlife losses, so it’s an important study.
Heres a pic of one I took a couple of years back
This is a female Common Blue, I had to look it up on the handy chart that comes with this survey! You can also get some great ident pics from UK Butterflies