Add Yahoo as a preferred source to see more of our stories on Google. Small bird sitting on someone's front porch - Devilino/Shutterstock A lazy afternoon on the patio can quickly turn sour when you ...

The bacteria, fungi and other pathogens in pigeon excrement can cause allergies and serious illnesses – for example in the lungs and gastrointestinal tract. Silas Stein/dpa A bird dropping on the ...