Swain's birds don't show in the map! (And I've carefully checked the video options already.)

I play at maxed out graphical settings, and I have the environmental details enabled. Even so, Swain's birds no longer show up in the map - which is a big shame, as that was actually my main reason to play that character now that birds hardly figure in his kit.

The odd thing is that, some rare times, a lonesome bird would show up in the map. Other times, I would see the animations of the birds flying away - except they weren't sitting in the map!

I would highly appreciate help on this matter, because it may seem just a small visual flair, but to me, it was a core part of enjoying Swain.

Thank you in advance!