Sep 282015
 

Studies taken from the weekly reporting of many garden birdwatchers have helped us to understand more about how we can affect and influence bird behaviour.

The BTO have looked at the data over a 12-year period and shown that Blackcaps have adapted to using the supplementary food put out in gardens, and this is believed to influence their distribution in the UK.   It is also believed to help them to expand their wintering range into Britain.

This discovery also complements “recent evidence that those Blackcaps migrating to Britain in winter are diverging phenotypically, as well as genetically, from those that winter in Spain. Blackcaps wintering in Britain have relatively narrower and longer beaks than those wintering in Spain, suggesting that British migrants have adapted to a more generalist diet.

The study provides new and timely evidence of the role that human activities can play in shaping the evolutionary trajectories of wild bird populations.”

To read the full article click here

Thanks to the BTO website for the information quoted above.

 Posted by on 28 September 2015 at 5:18 pm

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