 Starlings ' droppings can contain the fungus Histoplasma capsulatum , the cause of histoplasmosis in humans . At roosting sites this fungus can thrive in accumulated droppings . There are a number of other infectious diseases that can potentially be transmitted by common starlings to humans , although the potential for the birds to spread infections may have been exaggerated . 
 Starlings <a href='null_genetive' title='1'><mark>'</mark></a>droppings can contain the fungus Histoplasma capsulatum , the cause of histoplasmosis in humans . At roosting sites this fungus can thrive in accumulated droppings . <a href='dey_it' title='2'><mark>There</mark></a> are a number of other infectious diseases <a href='null_relcl' title='3'><mark>that</mark></a>can potentially be transmitted by common starlings to humans , although the potential for the birds to spread infections may <a href='been_done' title='4'><mark>have</mark></a> been exaggerated . 
Starlings  droppings can contain the fungus Histoplasma capsulatum , the cause of histoplasmosis in humans . At roosting sites this fungus can thrive in accumulated droppings . It is a number of other infectious diseases can potentially b transmitted by common starlings to humans , although the potential fa the birds to spread infections may done been exaggerated .