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wren?
The Wren is one of the UK=s smallest birds (weighing c. 8 g) and occurs throughout the UK in a wide variety of habitats. It is known to be affected strongly by snow cover and cold winter temperatures with breeding populations severely reduced after particularly cold winters. Numbers can recover quickly, however, because under most conditions Wrens can produce two broods per year of around 5-8 young, each of which survive well if winters are mild. Changes in population size between years are strongly related to mean temperatures in December, January and February.
[Edited on 8-3-2005 by CK and AK]
AK
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