Understanding Vulture Population Decline in Haryana & India

The question highlights a significant environmental issue concerning the sharp decline in the population of a specific bird species within Haryana and across India. The main cause identified for this worrying trend is the use of the veterinary drug Diclofenac.

The Severe Impact of Diclofenac on Vultures

The bird species most critically affected by the use of Diclofenac in livestock is the Vulture. Here's why:

• Drug Consumption: When cattle treated with Diclofenac died and their carcasses were consumed by vultures, the drug entered the vultures' systems.
• Toxicity: Diclofenac is highly toxic to vultures. It causes severe kidney failure and visceral gout.
• Mass Die-offs: This toxicity led to rapid and widespread deaths among vulture populations, resulting in a population crash estimated at over 95% in some species.

Vultures are essential scavengers in the ecosystem, helping to clean up carcasses and prevent the spread of diseases. Their drastic decline has had significant ecological consequences.

Why Other Options Are Incorrect

Let's look at why the other options are not the primary answer:

• Peacocks: India's national bird, the peacock, faces threats from habitat loss and sometimes conflicts with humans, but not primarily from Diclofenac poisoning.
• Cranes: Certain crane species might be endangered due to habitat degradation and hunting, but Diclofenac is not the main factor driving their population decline.
• Sparrows: Sparrow populations have declined in many urban and rural areas due to factors like pesticide use, loss of nesting sites, and changes in farming practices, not Diclofenac.

Therefore, the evidence clearly points to Vultures as the species suffering population decline due to Diclofenac use in veterinary practice in Haryana and India.