Highly aerial migration

Bird migration tracking using light-level geolocators


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Common Swift (A. apus) tracking

 

2010 season – 9 geolocators deployed

2011 season – 10 geolocators deployed – 4 recovered from 2010  (44.5%)

2012 season – 14 geolocators deployed – 4 recovered from 2011  (40%) + 2 geolocators possibly 3 seen but not recaptured.

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