US
Fostering awareness about the importance of sparrows and other urban wildlife is crucial
Over past 3 decades, Karachi saw up to 70% decline in population of sparrows
Rising pollution, habitat alteration and agrochemical use are key factors behind decline in sparrow population
The number of vehicles on the Golden Gate Bridge collapsed to 1954 levels
Practice of bird catching and keeping them in abject conditions has peaked in Sindh
Changing environment, lack of natural habitat results in decreasing population