Where have all the sparrows gone?

Online Research into Sparrows' disappearance


If you research the disappearance of sparrows online you will find many suggested reasons for the loss of sparrows.  

Some reasons suggested include the lack of cavity nesting sites, or increasing suburban predators such as cats and crows.

  • What others can you find? 
  • Which of these causes are credible?
  • Why do you think so?
  • How will you find out?