I consciously started a new photography project from my living room earlier this year, on account of not being able to get out and about much due to some health stuff. My mission; to capture the small garden birds that come and go outside my window, IN FLIGHT...
It's definitely got a few challenges, not least of all the lack of light available when you need to go to around 1/8000 shutter speed to properly freeze the action.
Then there's the focal plane issue. Getting tiny garden birds in focus when they're moving really fast is difficult, as only a tiny slither of 3D space can be in focus at once.
Luckily they're creatures of habit, so you quickly learn from observation that they tend to choose the same branches and trajectories a lot of the time during their routines. That way you can choose a focus point in advance of them (hopefully) being there!
Even then though, I’ve found only around 1 in 50 shots, if that, is useable and requires an awful lot of rescuing in the edit due to all the noise. What I need is a massive light. But I think my neighbours would hate that.
