female Chicadees unfaithful when male out-sung

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Subject:	female Chicadees unfaithful when male out-sung
From:	Andrew Taylor <>
Date:	Tue, 7 May 2002 10:23:20 +1000 (EST)

Two article on birds in the latest online Nature Science Update.

The first describes artificially defeating Black-capped Chicadees males
in song contests and then examining the impact on female fidelity by
looking at the DNA of the offspring.  Apparently if a female hears her
partner losing song contests she is more likely to surrepitously mate
with other males.

http://www.nature.com/nsu/020429/020429-14.html


The second article describes research showing bird species which see
better in low light start the dawn chorus:

http://www.nature.com/nsu/020429/020429-3.html

Free registration might be required to see the articles.

Andrew taylor

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