Me too. I was out hiking and ran into an old guy I know. He is 90 years old and he's a bird biologist and a naturalist by vocation. I changed my plans for the day and hiked with him for a few hours. He talked quite a bit about birds and ecology and it sparked my interest. I figured someone must've made an app to id bird calls, and I found Merlin in the Google store. Now I've been walking around trying to id every bird I hear. That was a few days ago, so seeing it here on HN is definitely a Baader–Meinhof moment.