Ok so a lot of us regularly say about leaving the radio on or the TV for company for our feathered friends. Well looks like the scientific peeps have caught up with our trains of thought ..... birds lives are enriched by background stimuli each preferring their own specific background ... which a lot of us knew anyways because we watch our birdies and learn
http://onlinelibrary.wiley.com/doi/10.1002/zoo.21260/pdf
http://onlinelibrary.wiley.com/doi/10.1002/zoo.21260/pdf