I like to hear the sound of birds when I travel amongst my orbital and planetary habitats scattered around the outer system.
Most of these settlements are very densely populated - what you might call arcologies in your time - and this generates heat which renders most of them tropical and subtropical climes for the sake of energy efficiency.
The pleasant melodies of creatures like scarlet-backed flowerpeckers and bulbul birds, you know the kind of thing, would be perfect for such an environment. But you may have seen the feeds, birds - like most animals - don't enjoy microgravity too much.
What kind of changes might we expect to see bird species undergo in order to live comfortably in the low- and microgravity conditions of my habitats? More importantly, are any of these changes significant enough that we would see drastic overall changes in bird behaviour (e.g. hopping on surfaces rather than flying)?
Asking for my biotech folks.