I often hear people talking about aches and pains as signs of ageing, but for me it's been a heightened awareness and interest in birds and gardening. One of my best friends is a military guy that, unfortunately, saw combat and the terrible things that go with that. He's obsessed with his flowers and just this past week was sending me pictures of both flowers and bulbs.
The data is sent to https://app.birdweather.com/ where I'm assuming bird scientists are doing something with it.
Full write-up on how it is created: https://clickhouse.com/blog/birds