Find the reason why Vultures were usually seen until a few years ago but now a days the Vultures are rarely seen :

Question

Accepted Answer

Explanation:

Option 2: Drugs used by Animal farmers to treat sick animals

The decline in vulture populations is primarily attributed to the use of a veterinary drug called diclofenac. This non-steroidal anti-inflammatory drug (NSAID) was commonly used by farmers to treat livestock. When vultures consumed the carcasses of animals treated with diclofenac, they suffered from kidney failure, leading to a significant decline in their population. This drug's impact on vultures was profound and rapid, causing a drastic reduction in their numbers across several regions. The link between diclofenac and vulture mortality is well-documented and has led to the banning of the drug for veterinary use in several countries. Therefore, Option 2 is the correct explanation for the decline in vulture sightings.

Explanation of why other options are incorrect:

Option 1: Destruction of their place of residence by new migrant species

While habitat destruction can impact wildlife, it is not the primary reason for the decline in vulture populations. Vultures are highly adaptable and can thrive in various environments as long as there is an adequate food supply. The sudden and widespread decline in vultures is more directly linked to the consumption of diclofenac-contaminated carcasses rather than habitat destruction.

Option 3: Food shortage of Vultures

Vultures are scavengers and primarily feed on carcasses. While food availability can affect their numbers, the drastic decline observed in recent years is not due to a shortage of food. Instead, it is the contamination of their food source with diclofenac that has led to their decline. Thus, food shortage is not the correct explanation for their reduced sightings.

Option 4: Spread of epidemic in Vultures

Although diseases can affect wildlife populations, there is no evidence of an epidemic causing the widespread decline in vulture numbers. The rapid decrease in their population is more accurately attributed to the toxic effects of diclofenac, rather than an epidemic. Therefore, this option does not provide the correct explanation for the decline in vulture sightings.

In conclusion, the use of diclofenac in livestock, as described in Option 2, is the primary reason for the decline in vulture populations, making it the correct answer.