Predators of songbirds such as the magpie tend to get a bad press when it comes to looking at the reasons for the decline of songbirds. According to this article, however, they are not to blame. At a time when species such as the yellowhammer and bullfinch have dropped by half there have been calls for culls of predators such as magpies and grey squirrels which have seen numbers soar. A study of the relationship between songbirds and predators has found that rather than more causing a decline they are in fact a indication of a higher number of animals further up the food chain and a healthy overall population. For the majority of songbirds there is no evidence of a link between predators and songbird decline although it is acknowledged this might be an issue in some cases on a local level. In fact research indicated that factors such as woodland management, changing farming practices and urbanisation were more behind the decline in most cases.