House sparrow decline research
Sparrows have been taken for granted as our cheery neighbours for centuries. But if you still have house sparrows near you today, you are lucky.
The House Sparrow We desperately need your support now to help our work at 75 research sites across Greater London looking into their seriously declining numbers.
House sparrows are being lost at an unprecedented rate. In some parts of London, where 'Cockney' sparrows were once a familiar sight, they may disappear altogether unless swift action is taken to prevent it.
Once a common bird in our towns and cities, studies of house sparrows have shown that their population has more than halved in the last 25 years.
Why is this happening? There are many theories and ZSL and the RSPB need your help so that we can research the reasons why sparrows are becoming rarer and, more importantly, what we can do to halt the decline in London as well as in other UK towns and cities.
The decline is not slowing down: Greater London lost seven out of 10 sparrows between 1994 and 2001. Our team of researchers is studying the places where sparrows live, finding their nests and studying both adults and chicks in detail. We need to find out how many eggs hatch, how many fail, what the adult birds are eating, what they feed their young, how well the young are developing, how many chicks die and how many survive.
The London House Sparrow Project will help us to identify ways to bring house sparrows back to our towns and cities.