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Polluted prey causes wild birds to change their tune from PhysOrg.com
Considerable attention has been paid to the effects of endocrine disrupting chemicals in aquatic environments, but rather less attention has been given to routes of contamination on land. A new study, published in PLoS ONE on February 27 by researchers at Cardiff University, reveals that wild birds foraging on invertebrates contaminated with environmental pollutants, show marked changes in both brain and behaviour: male birds exposed to this pollution develop more complex songs, which are actually preferred by the females, even though these same males usually show reduced immune function compared to controls.
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Also, see:
Encyclopedia of Life: Up and Running and Generating Debate at The Loom (Zimmer)
Animal magnetism provides a sense of direction from PhysOrg.com
They may not be on most people's list of most attractive species, but bats definitely have animal magnetism. Researchers from the Universities of Leeds and Princeton have discovered that bats use a magnetic substance in their body called magnetite as an 'internal compass' to help them navigate.
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Japanese moths hit by male-killing virus at Not Exactly Rocket Science (A new scienceblogs.com blogger)
Male insects have a tough time of it. Aside from the usual threats of predators, competitors and the odd hungry female, many are plagued by discriminatory parasites intent on killing them, while leaving their female peers unharmed. These "male-killers" are incredibly successful and infect a wide range of insects, who are themselves a very successful group. One of these killers, a bacteria known as Wolbachia, may well be the world's most successful parasite.
Life Science
