What is identified as the major stressor for the high-altitude specialist, the Blue-capped Tanager?

Answer

Deforestation and habitat fragmentation

The major stressor explicitly noted for the Blue-capped Tanager, which inhabits montane forests, is deforestation and habitat fragmentation, largely driven by agricultural expansion.

What is identified as the major stressor for the high-altitude specialist, the Blue-capped Tanager?
birdconservationstatusbluetanager