To me the merlin app is incredible. I can identify plenty of birds by their song, but there are plenty I can’t. The app lets you know what’s around you even when you can’t see it, especially the little brown jobs, the warblers, black caps, white throats, chats etc.
This time of year is the best too, when the dawn chorus is in full flow. Such a buzz watching the birds pop up on the app as it picks them up.