Eurasian Tree Sparrow
Passer montanus
Adult - Nottinghamshire, England- March 2010
Tree Sparrows are generally common throughout their extensive range (Europe and Asia), but in Britain have suffered a drastic decline with their numbers dropping by about 90% between 1969 and 1994. Their numbers, however, do appear to have stabilised over the last 10 years and recent reports suggest they may even have increased slightly.
Adult - East Yorkshire - May 2009
Adult - East Yorkshire - May 2009
Adult - Nottinghamshire, England - November 2013
Juvenile - Trigrad, Bulgaria - June 2007
Juvenile - Trigrad, Bulgaria - June 2007
In Bulgaria, their population is much healthier than Britain and they are an extremely common bird in most parts of the country.
Adult - Bratsigovo, Bulgaria - June 2007
Adult - Bratsigovo, Bulgaria - June 2007
The sexes are identical in appearance, but juveniles can be differentiated by the yellow base to their bills and duller, more diffuse head markings.
Juvenile - Bratsigovo, Bulgaria - June 2007
Juvenile - Bratsigovo, Bulgaria - June 2007
Juvenile - Bratsigovo, Bulgaria - June 2007
Adult - East Yorkshire - May 2009
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Adult - East Yorkshire - May 2009
Adult - East Yorkshire - May 2009
Adult - East Yorkshire - May 2009
Adult - Lancashire, England - March 2003
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