I had two groups up at the observatory today. There was a pretty cold wind on the heliport at 10 am, so I cut that part a bit short. But not before one of the ravens turned up to say "Hello."
Well, I'd got some cat biscuits in the car just for him/her, and s/he ate from my hand while people took photos, which was all very nice. Then I laid the box on the car's bonnet to carry on talking. And the raven pecked a hole in it to start helping itself.