The sudden rise in the number of cell phone towers has been held responsible for sudden decline of House sparrow (Passer domesticus). The electromagnetic pollution from mobile phone towers affects this bird by adversely affecting its:

Answer: [C] Reproductive cycle

  • The House sparrow (Passer domesticus) was once a common sight in our cities and its number has gone down drastically in recent years. The electromagnetic pollution from mobile phone towers harms its reproductive cycle.
  • Further, while the older ones feed on grains, the younger ones peck on insects. Due to the rapid encroachment of green space, use of insecticides, pesticides and herbicides food has become scarce for the birds. Starvation has killed a majority of them.
  • Nesting was another problem. Due to the rapid growth in the high-rise buildings, nesting became a big issue for the birds. [The Hindu]

This question is a part of GKToday's Integrated IAS General Studies Module