Can't Hold His Licker

Each year right around now, the squirrels begin their 'Screen Licking' routine. I have no idea why they do it. They only lick our screen room screens and not any of the other screens in our windows. And not all of them partake (thank goodness) but the few that do become a bit  obsessed! Maybe they're after an algae or perhaps a mold of some kind, who knows. I've 'researched' this phenomenon on line with no luck although there are You Tube videos of squirrels doing this. I considered waiting until tomorrow to get a shot of them doing this, to be able to Blip it for Silly Saturday, but since there is no guarantee that screens will be on their menu tomorrow...here it is! ;)
Wishing you a good weekend. Be careful and stay well!