Do you just “know” all the individual bird’s songs? I have no memory for the chirrups, trills & tweets. I just about recognise the golden notes of a blackbird on the top branch of a tree.
Not all of them, no - I use the Merlin Bird ID app. I mean, I do know some. I've been familiar with Blackbirds and House Sparrows since I was a kid. Others, like Goldfinch, Magpie, Jackdaw, I've learned to recognise since I started using Merlin.