Why are sparrows listed as endangered species?

Explanation

Reasons for reduction in Population of sparrows :
1. Absence of native plants which provide habitats (shelter, insects as food etc.)
2. Grocery stores being replaced with Super markets (gunny bags were pecked by sparrows for grains earlier.)
3. Cell phone radiation from Towers. Sparrow population is disappearing fast. Thus it is important to conserve sparrows which is becoming endangered because every animal is an important link is an ecosystem.