Articles
The Normandy caves
In early 2004, Essex Mammals Surveys went to Normandy in northern France to study the bats in the caves there.
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New species recorded
The pilot whale has recently been recorded for the first time in Essex, whereas the polecat has started to repopulate the county after an absence of 100 years.
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A conservation success in Essex!
During World War II, 2,500 airmen of the American 9th Airborne
Division were stationed in North Essex where they were billeted in
bunkers set in woodland. Today, fourteen of these bunkers survive
in woodland managed by Forest Enterprise and have been successfully
adapted as hibernation sites for four species of bat.
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Bats and sonograms
In the past, field-based bat surveys were conducted using heterodyne
bat detectors to identify those species present in an area. One of the
shortcomings of this technique was that some species might be missed
because the detectors could not be set simultaneously at the different
frequencies used by bats to record all species. New technology, involving
the recording of bat sounds with subsequent computer analysis, means
that more thorough surveys of development sites, conservation areas etc are now possible.
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The harvest mouse in Essex
Essex Mammal Surveys conducted a study of the distribution of harvest mice
in the county between October 1999 and March 2000. Presence of the species
was discovered in 106 new tetrads!
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