Just as a person moves from Delhi to Shimla to escape the summer heat,where do thousands of migratory birds migrate from the extremely cold regions of Siberia and the North Pole?

Given below are two statements:
Statement $I$: Stenohaline animals tolerate a wide range of salt concentration.
Statement $II$: Euryhaline animals are capable of handling a narrow range of salt concentration.
In the light of the above statements,choose the most appropriate answer from the options given below:

Annual migration does not occur in the case of ............ .

Species that can tolerate a wide range of salinity are called $............$.

Kangaroo rat is found in .........

In which of the following natural habitats is it possible for only one type of species to reside?