Both sunday and wednesday we had the luck to catch shrikes with GeoLocators.
This brings us 5 GeoLocators retrieved, and another 2 male shrikes with GeoLocators that still haven't been caught. Thus the return rate is (at least) 7 / 20.
The male caught last sunday was first trapped in 2009, whereupon it was trapped with the GeoLocator in 2010, and now in 2011. This, I think, is the first double return of a passerine carrying a GeoLocator, and it shall be exciting to compare the migration routes.
Soon, the field season is over and I will switch back to writing about other birds than R-b Shrikes.
This Mistle Thrush just caught an Adder.
This male Red-backed Shrike has completed two migration cycles carrying a GeoLocator on its back.