Exam Relevance

• UPSC GS-III: Biodiversity Conservation | Environmental Pollution | Climate Change and Ecosystems.
• HPAS GS-III: Himalayan Biodiversity | Environmental Conservation | Sustainable Tourism.
• HPAS Prelims/HP GK: Birds of Himachal Pradesh | Great Himalayan National Park | State Symbols.
• Prelims Focus: Himalayan Monal | Sexual Dimorphism | Altitudinal Migration | IUCN Status and Wildlife Protection.

Why in News?

Research on the Himalayan monal has highlighted how human-generated noise and climate change can affect Himalayan wildlife.

• A study published in Behavioural Processes found that birds in noisier habitats used higher-frequency calls, with changes in call duration.
• A separate study published in Scientific Reports examined how changing temperature and precipitation patterns could alter the bird’s suitable habitat.

The findings bring attention to the need for noise management, responsible tourism and habitat connectivity across mountain elevations.

What Are the Key Facts About the Himalayan Monal?

Its Least Concern classification and Schedule I protection represent different systems: one assesses extinction risk, while the other provides legal protection in India.

What Are Its Distinctive Features?

1. Sexual Dimorphism

The Himalayan monal exhibits sexual dimorphism, meaning males and females differ noticeably in appearance.

• Male: Bright, iridescent, multicoloured plumage and a metallic-green crest.
• Female: Predominantly streaked brown plumage, a white throat and bluish bare skin around the eyes.

The female’s less conspicuous colouration helps it blend into its surroundings.

2. Ground-Based Feeding

The monal uses its strong beak to dig through soil and leaf litter for plant material and invertebrates. It can also forage through snow.

Prelims point: A ground-dwelling bird is not necessarily flightless. The monal can fly, although it spends considerable time feeding on the ground.

3. Seasonal Altitudinal Movement

The bird moves between elevations according to seasonal conditions:

• Summer: Generally uses higher elevations, including breeding habitats.
• Winter: Moves towards lower elevations as snow cover increases and food becomes less accessible.

This is called altitudinal migration—movement up and down mountain slopes rather than necessarily across long geographical distances.

How Is Noise Pollution Affecting the Monal?

Findings of the Study

Researchers investigated the relationship between ambient noise and monal vocalisations in contrasting habitats.

Birds exposed to greater noise showed higher call frequencies, while call duration also varied with noise and habitat conditions. The findings indicate vocal plasticity, or the ability to adjust vocal behaviour in response to environmental conditions.

Why Do Higher-Frequency Calls Matter?

Traffic and other human activities can interfere with animal communication through acoustic masking.

Acoustic masking occurs when background noise makes a biological signal harder to hear or distinguish.

Changing call frequency may help a bird communicate against this background. However, a higher-frequency call means a higher-pitched call; it does not automatically mean a louder call.

What Are the Ecological Concerns?

Bird calls help convey information, including signals associated with breeding and interactions between individuals. Persistent interference may therefore affect communication.

However, a change in calling behaviour alone does not establish a decline in breeding success or population size. Those outcomes require further investigation.

Mains insight: Wildlife disturbance can occur through changes to the sound environment, even where vegetation has not been physically removed.

How Could Climate Change Affect the Monal?

The habitat-modelling study examined possible changes in suitable conditions under different climate scenarios. It identified temperature seasonality and precipitation patterns as important influences on habitat suitability. These are projections, rather than certain outcomes for every location.

1. Shifting Habitat Suitability

Warming can change which elevations offer favourable conditions. Some existing habitats may become less suitable, while other areas may become suitable.

2. Changes in Snowfall and Food Availability

Changes in snowfall, rainfall and seasonal temperatures can influence vegetation and the availability of food.

These changes may affect the timing and location of seasonal movements.

3. Changes in Forest–Meadow Boundaries

An upward movement of the treeline can alter alpine and subalpine habitat mosaics.

For mountain species, moving higher does not guarantee access to adequate food, shelter or breeding habitat.

4. Greater Importance of Connectivity

Even if a new area becomes climatically suitable, birds must be able to reach it. Fragmented or disconnected habitat can limit this movement.

The study therefore supports conserving connected habitats and climatic refuges across elevations, rather than protecting isolated sites alone.

What Other Threats Does the Species Face?

• Habitat loss and fragmentation: Development and changes in land use can reduce or divide suitable habitat.
• Hunting and poaching: Monals have historically faced hunting pressure, including for the male’s decorative crest feathers.
• Tourism-related disturbance: Vehicles, crowding and intrusive photography can disturb feeding and other activities.
• Combined pressures: Habitat disturbance may reduce the species’ ability to respond to changing climatic conditions.

The Great Himalayan National Park’s information on pheasants records the historical hunting of male monals for their crest feathers in Himachal Pradesh.

Why Is This Topic Important for Himachal Pradesh?

1. Presence in the Great Himalayan National Park

The Himalayan monal is among the pheasants found in Great Himalayan National Park (GHNP), Kullu district.

The park provides a relevant case study for examining Himalayan biodiversity, protected-area management and nature-based tourism.

2. Important State-Bird Distinction

HPAS Prelims point: The monal was formerly Himachal Pradesh’s state bird. The Western Tragopan replaced it in 2007.

3. Sustainable Tourism

The topic connects directly with tourism management in Himachal Pradesh’s forest and mountain landscapes.

Birdwatching can support local livelihoods, but it should be organised around wildlife needs, including quiet surroundings and minimal disturbance.

4. Conservation Beyond Park Boundaries

Seasonal movement means that conservation planning must consider habitats at different elevations, including areas outside protected boundaries.

HPAS Mains linkage: Effective mountain conservation requires coordination among forest authorities, local communities, tourism operators and infrastructure agencies.

What Measures Should Be Taken?

1. Manage Noise in Sensitive Habitats

• Reduce unnecessary honking and amplified sound near wildlife habitats.
• Regulate noisy activities around important breeding and feeding areas.
• Include noise assessment in tourism and infrastructure planning.

2. Maintain Habitat Connectivity

• Protect connected forest, shrubland and grassland habitats.
• Conserve routes linking seasonal habitats at different elevations.
• Restore degraded habitat using locally suitable vegetation.

3. Promote Responsible Birdwatching

• Maintain a safe distance from birds and nesting sites.
• Avoid chasing, feeding or repeatedly attracting birds with recorded calls.
• Train local guides in low-disturbance wildlife tourism.

4. Strengthen Scientific Monitoring

• Use acoustic recorders, field surveys and camera traps to monitor wildlife.
• Study whether changes in calls affect communication and breeding.
• Compare habitat projections with long-term observations.

5. Involve Local Communities

Support community participation in habitat protection, reporting of hunting and responsible tourism enterprises.

Conservation is more likely to endure when local people receive benefits and participate in decisions.

Key Concepts for Prelims

Mains Practice Question — 250 words

“Conservation of Himalayan wildlife requires attention to both habitat connectivity and human-induced disturbance.” Discuss with reference to the Himalayan monal.