Wild birds are susceptible to a range of different diseases, some of which are more commonly reported than others. Among the diseases reported from birds using garden feeding stations are those caused by Salmonella and E. coli bacteria. These are of particular concern because they are infectious and may lead to severe outbreaks under certain conditions.

Although precise symptons may vary between disease (and indeed between species and individual birds) there are some general signs that may alert you to the fact that an individual is suffering from some form of disease. Affected birds may appear lethargic and reluctant to move away from the feeding station. They may also show a fluffed-up appearance or difficulty in swallowing food/water.

Anecdotal evidence suggests that some bird species may be more susceptible to disease than others. Certainly, Greenfinches, Chaffinches, Siskins, House Sparrows and Collared Doves appear to be the most commonly reported victims of diseases. This may, in part, reflect the gregarious nature of these birds and their tendency to feed in flocks.