The South Oregon Crier Infestation has you kill 42 Criers, infected ravens, across Highway 97. Their nests sit in trees and on power poles over a wide area rather than one zone, and the job pays Diamond Lake.
Criers scream to alert Freakers and peck at you, so deal with them fast. A shotgun or SMG works when they dive.
This one takes longer than other infestations because it's spread out. Do it while riding between other Highway 97 jobs.
Cascade Lakes Rail Line Infestation
The Cascade Lakes Rail Line Infestation is a Highway 97 nest-clearing job along the old rail line, with 5 nests to burn. It pays Diamond Lake, and Aspen Butte Ambush Camp lies just to the southwest.
Chemult College Infestation
The Chemult College Infestation is a 6-nest job at Chemult Community College, once a NERO refugee camp on Highway 97. It pays Diamond Lake and opens after the story mission You Couldn't Stop Shaking.
Cloverdale Research Iron Butte Facility
The Cloverdale Research Iron Butte Facility is a high-security private lab in Iron Butte, still powered two years after the outbreak. You only go here with Sarah for the story, so there is no open-world job to clear.
Berley Lake Infestation
The Berley Lake Infestation is a Lost Lake nest-clearing job with 4 nests to burn. It pays Iron Mike's Camp and sits near the Berley Lake Ambush Camp and the Santiam Tunnel checkpoint. You can clear all three in one trip.