Friday, July 03, 2009

Return of the sparrows

There are definitely more sparrows around than last year, when they almost disappeared from sight. Also, when I was in Paris I noticed loads of these little birds flying around the Louvre.

Sparrows are still on the RSPB's conservation 'red list' though. The site provides some colourful background on the birds:

... "From the mid-18th century most parishes had sparrow clubs with the sole objective to destroy as many sparrows as possible. Bounties were paid for sparrows until the late 19th century, when it was accepted that the control measures did not work. Similar failures were recorded in a number of other European countries.

Ironically, as people in Europe were paid to kill sparrows as pests, others deliberately introduced them to places as far apart as Australia and New York. Initially they were welcomed, although later appreciation turned to serious concern for the impact on crops."

... "Sparrow populations have fluctuated greatly over the centuries, with a gradual decline over the last 100 years. Change from horse-drawn vehicles to motorised ones caused the sparrow population in many cities to drop by two thirds, with the removal of an important food supply - the cereal fed to horses.

Recent declines have been caused by a combination of reduced plant food in winter, reduced insect availability for chicks, and reduction in available nest sites. On farmland, these are attributed to changes in agricultural practices.

Housing of livestock in inaccessible buildings, mechanisation of grain harvest and more effective storage of grain and animal feeds all reduced sparrows access to food. Recent cereal hygiene regulations mean that farm buildings are sealed, and therefore offer fewer nesting sites."

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