THE RSPB is asking people to help to find out more about house sparrows, in an attempt to explain why numbers are falling.
David Hirst, of the RSPB's North of England region, said: "Studies over the last 25 years have shown that the house sparrow population has more than halved."
The RSPB survey of house sparrows is launched on May Day and runs from Saturday, May 3, to Sunday, May 11.
Mr Hirst said: "We need people to help us find out more about house sparrow numbers.
"We need to know where they are doing well and where they are in trouble. It is also important to know about areas where there are no sparrows at all.
Results can be sent in online by visiting the RSPB website www. rspb.org.uk/sparrowatch where the form will be available from Thursday until June 8.
A house sparrow pack is available by phoning the RSPB's house sparrow hotline number 0870 601 0215, before May 6 or by writing to Sparrowatch 2003, FREEPOST ANG10850, 17 Birkheads Road, Reigate, RH2 9SP
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