Updates from our Cuckoos

BB has become the first of our Scottish Cuckoos to leave Britain. On the 16 June he was still in Flanders Moss NNR (between Aberfoyle and Stirling), where he and three of his colleagues had moved from the tagging location. During the morning and early afternoon of Monday 18 June, however, a series of locations tracked his progress as he moved SE over the North Sea to the Friesland Islands in the Netherlands. This is the first time we have tracked or seen such a long a sea crossing by the Cuckoos – there is no indication that he attempted to minimise the distance he flew over the sea, as we have seen some of the Cuckoos appear to do last year over the Mediterranean. It’s not possible to say for sure where he started his sea crossing but it was probably somewhere between Edinburgh and Berwick-on-Tweed - this would make the crossing about 550-600km (342-372 miles) long.

The south shore of Loch Katrine, Stirling, was the catching site for Cuckoo 115591.  Caught on 17 May 2012 this is BB’s second summer in the UK, having hatched during the summer of 2011.