Vulnerable

As one of our regulars at the Wall Caff has already appeared on a post today, it's only fair to feature another of the most loyal customers.

The excuse for mentioning him is the news that the great tit is likely to be more vulnerable to outbreaks of avian pox than other birds. This is a disfiguring and unpleasant growth that can affect the eyes and beak of the birds. A good account of the likely impact of the disease can be found on the BBC's website.