It's likely they're referring to the effect outdoor cats have on bird populations. They're credited with the the extinction of 63 species: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056110/
37 karma · joined September 29, 2016
Another I'd add that really makes the phone boring is putting it in grayscale mode. On iOS: Settings > General > Accessibility > Display Accommodations > Color Filters > Grayscale. Then you can set the Accessibility Shortcut to Color Filters, and when you triple click the home button your phone goes grayscale.
I don't have it on 24/7, but do enable it any time I feel myself getting sucked in too frequently.
The phone won't do anything until the person who turned on the lock turns it off again.