2014 Q. Set A
Environment & Ecology
Biodiversity

If you walk through countryside, you are likely to see some birds stalking alongside the cattle to seize the insects disturbed by their movement through grasses. Which of the following is/are such bird/birds?

  1. Painted Stork
  2. Common Myna
  3. Black-necked Crane

Smart Elimination

Cranes and Storks are water/wetland birds (they have long legs for wading in water). They do not typically walk in dry grass fields next to cows. The Common Myna is a bird found everywhere near humans and cattle.

Potential Trap

Confusion with Cattle Egret: The Cattle Egret is the most famous bird for this behavior. However, the Common Myna also exhibits this behavior.

Answer Key & Explanation

Answer: B

The correct answer is Option B.

Explanation:

  1. Painted Stork: It is a fish-eating bird found in wetlands. It does not typically stalk cattle for insects.
  2. Common Myna: It is an omnivorous bird often seen perched on cattle or walking alongside them to eat insects disturbed by the cattle's movement.
  3. Black-necked Crane: A high-altitude bird (Ladakh/Tibet) found in wetlands/marshes, not associated with cattle in the countryside for insects.

Value Addition

  • Commensalism: This relationship (where the bird benefits and the cattle is unaffected) is an example of commensalism.
  • Black-necked Crane: State bird of Ladakh (previously J&K).

Topic Trend (2011-2025)

Visualize the frequency of this topic across past year papers. Click on any bar to see questions.

Questions
No Questions
11 12 4 13 3 14 15 16 17 18 19 20 21 22 23 24 25
Difficulty Assessment
medium

Foundational question based on core concepts.

Global Importance Score
5 / 10
Based on analysis of this topic across 2011-2025.