I can't help with that bird call, but it reminded me of when we were out feeding the squirrels in Sefton Park on Monday. We were in a small wooded area and just a couple of feet away from me was a little Robin singing its head off. What a lovely song it was too. I watched him or her for ages.
A bird sighting of a different kind today. I was cleaning the windows at my Mum's place. I'm out in the back garden when a Sparrowhawk swoops in and tries to swipe a Sparrow off the bird feeder. Thankfully for the little Sparrow, it missed then landed on the shed. I chased it off then. I like them, and I know they have to eat, but it's not having another of our Sparrows.