Do you salute/whistle at magpies?

[MirandaGoshawk]

If so, can you please explain why you do it? Have just spent the day out with a friend and she did this a lot. I think there were maybe two pairs of birds flying about and she both saluted and whistled at them several times while we were talking. I found it a bit 'look at me' and she couldn't tell me why she did it, except that her family did. Nothing on web that I could find.TIA

I fist-bump the odd finch or high five a pigeon, magpies get far too much of the limelight 😁

woolly! I hope you curtsey to swans too.