Something is off in those pictures. Looks like a nice winter storm hit. That could also be the reason. Reminds me of a conversation I had with my girlfriend in our hot tub last night as she was wondering why her hummingbird feeder still seems to have food in it, she took it down during the storm we had (rain, hail, snow in parts of Phoenix) and put it back up and she was fretting that maybe they got lost and wouldn’t be back and I just said “Hummingbirds will be back, just different ones. They are dead.” Sad face ensues, that never occurred to her.

Fragile creatures die easily.