Siskin invasion

The last few days has seen an invasion of Siskins. Hundreds of the small finches are passing south every morning with thousands being logged at some sites. They are usually very vocal and have a very distinctive call, so can be identified quite easily when flying overhead. You can hear their call at: http://www.garden-birds.co.uk/birds/siskin.htm#Voice

Many are stopping for a rest around Copenhagen - the picture above was taken in a car park in the centre of the city.