While birds may not always be considered a friend to bees;-), they nonetheless attracts attention and are another indicator species of poor natural conditions.
Declines in insectivorous birds are associated with high neonicotinoid concentrations -- http://www.nature.com/nature/journal/v511/n7509/full/nature13531.html?WT.ec_id=NATURE-20140717
Declines in insectivorous birds are associated with high neonicotinoid concentrations -- http://www.nature.com/nature/journal/v511/n7509/full/nature13531.html?WT.ec_id=NATURE-20140717