>>2790780I'd say it depends on your standards. I left my camera charger behind on a recent trip but in the end my phone sufficient as far as recording memories of the trip (pic related).
You'll definitely get better control over exposure and colour with a camera.
>From what I have absorbed, it seems like a "mirrorless" camera can offer a more compact size than a traditional DSLR but maybe I'm wrong.They're smaller than a DSLR but they're pretty hefty compared to a phone or compact point-and-shoot camera.
Especially if you want any sort of zoom capability. You don't want to lug around a heavy camera and a zoom lens but you also want enough optical zoom to capture details of wildlife - the problem with that is that the size of a zoom lens goes up as the size of the camera sensor does. A mirrorless camera might be smaller than a DSLR because they've cut out the prism for the viewfinder but they still tend to have a big-ass sensor and that's great for optical quality but it means zoom lenses (any lenses desu) are going to be much bigger than the equivalent amount of zoom for a compact camera or phone. You might be better off with a compact camera, the lens and sensor won't be as good as a mirrorless, interchangeable lens camera but they'll be a lot smaller and still significantly better than your phone (probably, high-end phone cameras are pretty good now, I don't know if compact cameras have kept up).