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Himalayan monal bird changing its voice and habitat due to human activity and climate change, research shows
Overview
Two recent studies by Indian researchers reveal that the Himalayan monal pheasant is altering its vocalisations and being forced to move higher up the mountains due to human activity, infrastructure development, tourism, and climate change. The bird, which serves as a key indicator of ecosystem health in the region, is changing its pitch and shortening call durations to cut through anthropogenic noise in busy valleys, while climate change and human encroachment shrink its traditional alpine habitat.
Key points
- Two studies conducted over five years by Indian researchers highlight threats to the Himalayan monal, a pheasant significant to regional culture and ecology.
- The monal is changing its pitch and producing shorter call durations in noisy tourist areas to cut through human-generated traffic and visitor noise.
- Researchers found that birds in noisy environments produce calls with significantly higher peak frequencies compared to those in quieter habitats.
- The vocal changes indicate behavioural flexibility rather than a permanent evolutionary shift.
- Infrastructure development, heavy urbanisation, and unregulated tourism are squeezing the monal's natural habitat in alpine meadows.
- Climate change is projected to shrink and destabilise the bird's habitat through 2100, forcing populations to higher, more fragmented elevations.
- As an indicator species with a narrow habitat range, the monal's struggles suggest broader ecological stress across the Himalayan ecosystem.