Had not driven my '95 Blazer for over a month, didn't run hot before I was out of town. Didn't overheat, just ran hotter than what I was used to seeing. Coolant level was fine, belt was OK, fan clutch seems to be OK.

Noticed some feathers in the shroud. Took the top piece out for a look. Found a bird nest and some mummified birds between the radiator and the A/C condenser core. Cleaned it all out and blew out as much other trash as I could.

Runs a lot cooler, normal now.

 

Whoa! Good catch!