Let me add, (now that I read the comments).. the air here is pretty clean, and there is no 5G within a hundred miles., and it is definitely not Biden Country... I doubt that he, nor Kamala or any of their team could even find it on a map.
If you think the air is clean in NM you should look at the map I linked to in #23. Keep a couple of things in mind. The smoke may be aloft not at ground level and migratory birds didn’t start out in NM.
Both of those reasons, smoke aloft and a long flight, might account for the fact that only migratory birds have been dying and local birds have not.