I was recently at a music festival in a field here in the UK. It was a nice hot day and I was staring up into the lovely blue sky. I noticed there were high numbers of seagulls circling above, seemingly riding thermals to a great height (they quickly became speks in the sky).
I started wondering, what are they up to? I couldn't make sense of it.
If they were riding the thermals as a mode of transport, they didn't appear to be going anywhere (just round and round in circles).
It didn't make sense that they were doing it to spot food either (that I thought). There was plenty of food about, but none of them appeared to be making any attempt to come down.
It almost appeared that they were simply riding the thermals for fun.
So why would these birds by seemingly riding thermals for no reason?