Crows are the latest cause for worry for officials of Central Railway (CR). With the power system having switched from 1,500-volt DC to 25,000-volt AC, the authorities fear the birds making their nests atop the cables will cause them to get electrocuted and disrupt the power supply.

A huge crowd at Dadar station waiting for trains. More than 65 services had been cancelled by 7 pm yesterday, and the number was expected to go up further by the end of the day. Pic/Shadab Khan