Which of the following is not a bird?

(a) Golden Mahseer

(b) Indian Nightjar

(d) White Ibis

Explanation

Based on the given options, the correct answer is:

(a) Golden Mahseer

Here is an explanation for each option:

(a) Golden Mahseer is not a bird; it is a type of freshwater fish found in the Himalayan region. It is known for its golden color on the dorsal side and reddish-yellow fins. The Golden Mahseer is also referred to as the tiger among fish due to its large size and toughness.
(b) Indian Nightjar is a bird that is a resident breeder in open lands across South Asia and Southeast Asia. It is a small, crepuscular nightjar known for its characteristic calls at dawn and dusk.
(c) Spoonbill is a bird belonging to the genus Platalea. These large, long-legged wading birds have a distinctive spoon-shaped bill and can be found on every continent except Antarctica.
(d) White Ibis is a bird belonging to the ibis family, Threskiornithidae. It is a medium-sized bird with an overall white plumage, bright red-orange down-curved bill, long legs, and black wingtips that are usually only visible in flight.

Golden Mahseer is an endangered species listed on the IUCN Red List. It inhabits fast-moving waters, hill streams with rocky and stony substrates, and can be found in temperatures between 5°C and 25°C.
Indian Nightjar has a distinctive call that has been likened to a stone skipped on a frozen lake. It has a considerable plumage variation across its range and can be hard to differentiate from other nightjars in the region.
There are six recognized species of Spoonbills, which are usually placed in a single genus but have sometimes been split into three genera. They have a global distribution and can be found in various habitats, including marshes, swamps, and coastal areas.
The American White Ibis is one of the species of ibis and is found from Virginia via the Gulf Coast of the United States south through most of the coastal New World tropics. It feeds on small fish, crustaceans, and insects and nests in colonies in trees, marshes, or rocks.