RSPB Scotland and researchers at the University of Glasgow are looking for volunteers to help solve the mystery of the vanishing speuggies.
House sparrows were once a common sight throughout the greater Glasgow area, including Milngavie, Bearsden, Kirkintilloch and Bishopbriggs, but numbers are estimated to have dropped by a staggering 90 per cent since the 1970s.
Now, volunteers are needed to help track down the remaining birds, and discover more about where they’re living.
RSPB Scotland’s Toby Wilson said: “House sparrow numbers have been nose-diving across the UK in recent years, and Glasgow is following the trend.
“But parts of the city are still strongholds for these boisterous little birds, and we need help from the public to find them.