Which of the following is not a bird ?
- AGolden MahseerCorrect
- BIndian Nightjar
- CSpoonbill
- DWhite Ibis
Explanation
Let's identify each option:
A) Golden Mahseer: The Golden Mahseer (Tor putitora) is a large freshwater fish species found in riverine ecosystems, particularly in the Himalayan region. It is highly endangered and often referred to as the "Tiger of the waters." It is definitely not a bird.
B) Indian Nightjar: The Indian Nightjar (Caprimulgus asiaticus) is a nocturnal bird species found across South Asia. It is known for its distinctive calls and camouflaged plumage.
C) Spoonbill: Spoonbills are a genus (Platalea) of large wading birds belonging to the family Threskiornithidae (ibises and spoonbills). They are characterized by their distinctive spoon-shaped bills, used for sifting through water for food.
D) White Ibis: The White Ibis (Eudocimus albus) is a medium-sized wading bird found in coastal wetlands and marshes of the Americas. It is part of the Ibis family and is distinctly a bird.
Therefore, Golden Mahseer is the only option that is not a bird; it is a fish.

Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 2022GS1geography
Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?
- Prelims 2022GS1geography
"System of Rice Intensification" of cultivation, in which alternate wetting and drying of rice fields is practised, results in : 1. Reduced seed requirement 2. Reduced methane production 3. Reduced el…
- Prelims 2022GS1geography
"Climate Action Tracker" which monitors the emission reduction pledges of different countries is a :
- Prelims 2022GS1geography
Consider the following statements : 1. "The Climate Group" is an international non-profit organization that drives climate action by building large networks and runs them. 2. The International Energy …
- Prelims 2022GS1geography
"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys." Which one of the following functions of wetlands best reflects the above statement?
- Prelims 2022GS1geography
In the context of WHO Air Quality Guidelines, consider the following statements: 1. The 24-hour mean of PM2.5 should not exceed 15 µg/m³ and annual mean of PM2.5 should not exceed 5 µg/m³. 2. In a yea…