This video shows a singing song thrush.
The Dutch SOVON ornithologists report (translated):
Friday, June 26th, 2015
The last two winters were mild, so good for resident birds which throughout the year stay in our country. The Starling, after years of decline, showed a slight increase. Grey Heron, Common Moorhen and Wren also had similar tendencies compared to 2014. It is encouraging that the Song Thrush, a short-distance migrant, shows an increase again, for the eight years before 2015 there was a decrease. The feral pigeon has decreased and perhaps that is because it is fed less or because of the increase in peregrine falcons in urban areas. Surprisingly, there is decline in house sparrows, while in previous years, there was a slight increase.